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ILLINOIS

HIGHWAY SAFETY 

IMPROVEMENT PROGRAM 

2021 ANNUAL REPORT

U.S. Department ofTransportation 

Federal Highway Administration 

Photo source: Federal Highway Administration
2021 Illinois Highway Safety Improvement Program

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Table of Contents

Disclaimer ............................................................................................................................................. 3

Protection of Data from Discovery Admission into Evidence............................................................. 3

Executive Summary .............................................................................................................................. 4

Introduction ........................................................................................................................................... 5

Program Structure................................................................................................................................. 5

Program Administration..................................................................................................................... 5

Program Methodology ....................................................................................................................... 7

Project Implementation .......................................................................................................................16

Funds Programmed.........................................................................................................................16

General Listing of Projects ..............................................................................................................18

Safety Performance ............................................................................................................................25

General Highway Safety Trends......................................................................................................25

Safety Performance Targets............................................................................................................30

Applicability of Special Rules...........................................................................................................32

Evaluation ...........................................................................................................................................33

Program Effectiveness ....................................................................................................................33

Effectiveness of Groupings or Similar Types of Improvements .......................................................33

Project Effectiveness.......................................................................................................................38

Compliance Assessment ....................................................................................................................39

Optional Attachments..........................................................................................................................42

Glossary..............................................................................................................................................43
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Disclaimer 

Protection of Data from Discovery Admission into Evidence

23 U.S.C. 148(h)(4) states “Notwithstanding any other provision of law, reports, surveys, schedules, lists, or

data compiled or collected for any purpose relating to this section[HSIP], shall not be subject to discovery or

admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action 

for damages arising from any occurrence at a location identified or addressed in the reports, surveys, 

schedules, lists, or other data.

23 U.S.C. 148(h)(4) states “Notwithstanding any other provision of law, reports, surveys, schedules, lists, or

data compiled or collected for any purpose relating to this section[HSIP], shall not be subject to discovery or

admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action 

for damages arising from any occurrence at a location identified or addressed in the reports, surveys, 

schedules, lists, or other data.23 U.S.C. 409 states “Notwithstanding any other provision of law, reports, 

surveys, schedules, lists, or data compiled or collected for the purpose of identifying, evaluating, or planning 

the safety enhancement of potential accident sites, hazardous roadway conditions, or railway-highway

crossings, pursuant to sections 130, 144, and 148 of this title or for the purpose of developing any highway

safety construction improvement project which may be implemented utilizing Federal-aid highway funds shall

not be subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for

other purposes in any action for damages arising from any occurrence at a location mentioned or addressed in 

such reports, surveys, schedules, lists, or data.”
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Executive Summary

In July 2017, the Illinois Department of Transportation (IDOT) updated its Strategic Highway Safety Plan 

(SHSP) with the ultimate goal of reaching zero fatalities and serious injuries on all Illinois roads by the year 

2034. One of the strategies mentioned in the plan, was the Federal Highway Administration’s (FHWA) Highway 

Safety Improvement Program (HSIP).

HSIP in Illinois is a data-driven program whose purpose is to provide funding for proven countermeasures to 

reduce fatalities and serious injury crashes on Illinois roadways. IDOT’s Bureau of Safety Programs and 

Engineering (BSPE) oversees the program and HSIP Committee while working with other safety partners such 

as the FHWA, IDOT’s Bureau of Operations, IDOT’s Bureau of Local Roads, IDOT districts, and local agencies 

and MPOs. Currently, IDOT districts may apply for HSIP funds year-round, while local agencies and MPOs 

may apply for projects only once a year.

The HSIP Committee approves projects based on several factors such as historical crash data, appropriately 

chosen countermeasures based on the crash history, and the benefit/cost value. In recent years, the HSIP 

Committee has been trying to encourage IDOT districts and local agencies to consider alternative strategies as 

suggested by the FHWA such as innovative intersections or utilizing systemic approaches. 
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Introduction 

The Highway Safety Improvement Program (HSIP) is a core Federal-aid program with the purpose of achieving 

a significant reduction in fatalities and serious injuries on all public roads. As per 23 U.S.C. 148(h) and 23 CFR 

924.15, States are required to report annually on the progress being made to advance HSIP implementation 

and evaluation efforts. The format of this report is consistent with the HSIP Reporting Guidance dated

December 29, 2016 and consists of five sections: program structure, progress in implementing highway safety 

improvement projects, progress in achieving safety outcomes and performance targets, effectiveness of the 

improvements and compliance assessment.

Program Structure

Program Administration

Describe the general structure of the HSIP in the State. 

IDOT has an HSIP policy which identifies the process for data analysis, project application, project review, and 

approval and can be accessed via http://www.idot.illinois.gov/transportation-system/local-transportationpartners/county-engineers-and-local-public-agencies/funding-opportunities/highway-safety-improvementprogram ).

IDOT is currently still in the process of updating the HSIP Policy and creating an HSIP Evaluation Tool.

Illinois' HSIP is overseen by IDOT's Bureau of Safety Programs and Engineering (BSPE). IDOT districts are 

allowed to submit applications throughout the year for the HSIP Committee to review at their monthly meetings. 

Local agencies are able to submit once a year when the application period is open. Both state and local 

programs are reviewed based on using a data-driven and proven countermeasure approach.

Where is HSIP staff located within the State DOT? 

 Other-Bureau of Safety Programs and Engineering

How are HSIP funds allocated in a State? 

• Other-See explanation in box.

20% is allocated for local use, 20% is allocated for statewide safety initiatives, and remaining is divided 

between districts based on fatality rates. However, additional funding for local projects may be used from state 

funding if determined its needed for quality local projects.

Describe how local and tribal roads are addressed as part of HSIP.

Each year there is a period in which local agencies and MPOs are able to apply for funding for local projects. 

When the window to apply begins, BSPE hosts a webinar for local agencies and MPOs to inform them of the 

HSIP process and provide examples of HSIP applications are likely to be approved or denied. Through 

coordination with IDOT’s Bureau of Local Roads, local applications are received and then reviewed. Local 

HSIP applications are reviewed with the same criteria as state applications. A history of crashes must be 

shown, a countermeasure selected to address the crashes, and the benefit/cost analysis. However, should the 

project be systemic, a history of crashes is not required as long as the roadway owner can show the 
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locations/locations have roadway characteristics proven to contribute to fatal and severe injury crashes and the 

proposed countermeasure targets those fatal and severe injury crashes. 

Identify which internal partners (e.g., State departments of transportation (DOTs) 

Bureaus, Divisions) are involved with HSIP planning.

• Design

• Districts/Regions

• Local Aid Programs Office/Division

• Operations

• Traffic Engineering/Safety

Describe coordination with internal partners.

IDOT's HSIP Committee (formerly referred to as the Central Traffic Safety Committee in previous online 

reports) is comprised of several IDOT members from various bureaus within IDOT. Most are from the Bureau 

of Safety Programs and Engineering (BSPE), but there are also members from the Bureau of Operations and 

Bureau of Design and Environment and one IDOT district who have their own unique perspective and area of 

expertise.

The HSIP Committee also works closely with IDOT districts on HSIP applications. Even if an application is 

denied, the HSIP Committee will provide a reason for the denial and suggestions for the district to reapply 

using a different and more appropriate countermeasure based on the observed crash data. The HSIP 

Committee also encourages an open dialogue with the districts and ensure they're welcome to reach out to the 

HSIP Committee on any possible projects.

One instance featured a district unsure of support for a roundabout. The HSIP Committee reviewed the data 

and agreed to meet with the district in which the HSIP Committee agreed with the proposed roundabout. An 

application followed shortly after which the HSIP Committee approved.

Each year when the submittal window for Local HSIP projects is open, the HSIP Committee works closely with 

the Bureau of Local Roads (Local Aid) in coordinating the submittal of Local HSIP applications. The Bureau of 

Local Roads works with the HSIP Committee in reviewing and approving or denying Local HSIP applications.

Identify which external partners are involved with HSIP planning.

• FHWA

• Local Government Agency

• Regional Planning Organizations (e.g. MPOs, RPOs, COGs)

• Other-Local Agencies

Local agencies/municipalities submit applications during the annual open window to the HSIP Committee and 

IDOT Local Roads personnel.

Describe coordination with external partners.

Besides IDOT employees, the HSIP Committee includes FHWA staff. Should a question arise about funding or 

the eligibility of projects, the HSIP Committee will reach out to their external partners at FHWA.
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Similar to how the HSIP Committee encourages IDOT districts to reach out with any questions regarding HSIP, 

the HSIP Committee encourages local agencies and MPOs to reach out and provides feedback and comments 

on Local HSIP applications. The HSIP Committee ensures they have access to the latest BSPE tools such as 

the safety tiers, data trees, emphasis area tables and graphs, crash data, and crash analysis tool, and putting 

them into contact with the IDOT safety contact from their respective IDOT district.

Describe other aspects of HSIP Administration on which the State would like to 

elaborate. 

HSIP in Illinois is administered by the HSIP Committee. The HSIP Committee is overseen by IDOT’s Bureau of 

Safety and Programs (BSPE)’s Safety Design Unit Chief. The HSIP Committee is made of members from 

BSPE, IDOT’s Bureau of Operations and Bureau Design and Environment, and FHWA. All projects are 

approved based on the 90/10 split, with 90% of the project cost being paid for by HSIP funds and the 

remaining 10% paid for by either the district or local agency requesting the HSIP funding.

Once a month, The HSIP Committee reviews new HSIP applications for projects on state roadways. Any of the 

nine IDOT districts can submit an HSIP application through the HSIP SharePoint site. Each application must 

include the five most recent years of available crash data for the location, a detailed cost sheet, a project 

description, and a completed copy of Illinois’ benefit/cost tool spreadsheet which is available via IDOT’s 

website. Ideally, the application will have supporting documentation such as plans, photos of existing 

conditions, and the location. At the monthly meeting the HSIP Committee then decides to approve or deny 

each application. Applications may be reviewed with partial funding, or denied, but encouraged to resubmit 

based on feedback from the HSIP Committee.

The HSIP Committee also works with members from IDOT’s Bureau of Local Roads in administering HSIP 

projects on local roads. Local agencies and MPOs can apply once a year for local HSIP projects. The 

requirements for local HSIP applications are the same as state applications.

After applications are approved, the district or local agency are then notified so they can continue with the next 

steps of programming and constructing their project. For the HSIP Committee to perform an evaluation on the 

effectiveness of the project, they require five years of after data.

Program Methodology

Does the State have an HSIP manual or similar that clearly describes HSIP planning, 

implementation and evaluation processes?

Yes

http://www.idot.illinois.gov/Assets/uploads/files/Transportation-System/Manuals-Guides-&-

Handbooks/Safety/SAFETY%201.06%20-%20Safety%20Engineering%20Policy%20Memorandum.pdf

Select the programs that are administered under the HSIP.

• Horizontal Curve

• HRRR

• Left Turn Crash

• Local Safety

• Pedestrian Safety

• Roadway Departure

• Other-Run off Road (Pilot)
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Program: Horizontal Curve

Date of Program Methodology:3/1/2018

What is the justification for this program? 

• Addresses SHSP priority or emphasis area

• FHWA focused approach to safety

What is the funding approach for this program? 

Competes with all projects

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• All crashes

• Fatal and serious injury crashes

only

• Traffic

• Volume

• Median width

• Horizontal curvature

• Functional classification

• Roadside features

What project identification methodology was used for this program? 

• Crash frequency

• Crash rate

• Other-Weighted crash rate

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization.

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:1

Cost Effectiveness:2
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Program: HRRR

Date of Program Methodology:3/1/2018

What is the justification for this program? 

• Other-HRRR

What is the funding approach for this program? 

Other- Funding set aside if in penalty, otherwise competes with all projects

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Fatal and serious injury crashes 

only • Traffic • Functional classification

What project identification methodology was used for this program? 

• Crash rate

• Excess expected crash frequency using SPFs

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• Competitive application process

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:1

Cost Effectiveness:2

Program: Left Turn Crash

Date of Program Methodology:11/6/2019
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What is the justification for this program? 

• Other-Address high amount of crashes and severe injuries occurring at urban signalized 

intersections

What is the funding approach for this program? 

Competes with all projects

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Fatal and serious injury crashes 

only • Traffic • Functional classification

• Roadside features

What project identification methodology was used for this program? 

• Crash frequency

• Crash rate

• Excess proportions of specific crash types

Are local roads (non-state owned and operated) included or addressed in this 

program?

No

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:1

Cost Effectiveness:2

Program: Local Safety

Date of Program Methodology:1/1/2018

What is the justification for this program? 
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• Addresses SHSP priority or emphasis area

• FHWA focused approach to safety

• Other-HRRR Penalty

• Other-FHWA EDC5

What is the funding approach for this program? 

Other-HSIP allocation for locally owned roadways

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Fatal and serious injury crashes 

only • Traffic

• Horizontal curvature

• Functional classification

• Other-Ownership

What project identification methodology was used for this program? 

• Crash frequency

• Crash rate

• Excess expected crash frequency using SPFs

• Excess proportions of specific crash types

• Probability of specific crash types

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• Competitive application process

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:2

Cost Effectiveness:1
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Program: Pedestrian Safety

Date of Program Methodology:9/28/2017

What is the justification for this program? 

• Addresses SHSP priority or emphasis area

• FHWA focused approach to safety

What is the funding approach for this program? 

Competes with all projects

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Other-Pedestrian fatal and 

serious crashes only • Other-All routes eligible

What project identification methodology was used for this program? 

• Crash frequency

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• Competitive application process

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:1

Cost Effectiveness:2

Program: Roadway Departure

Date of Program Methodology:3/31/2021
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What is the justification for this program? 

• Addresses SHSP priority or emphasis area

• Other-Assist local agencies

What is the funding approach for this program? 

Competes with all projects

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Fatal and serious injury crashes 

only • Other-Loal rural roads

What project identification methodology was used for this program? 

• Crash rate

• Other-Benefit/cost analysis

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

• Other-Compete with all local road HSIP applications

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Ranking based on B/C:2

Available funding:3

Other-Crash history:1

Program: Other-Run off Road (Pilot)

Date of Program Methodology:3/4/2019

What is the justification for this program? 
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• Addresses SHSP priority or emphasis area

• FHWA focused approach to safety

What is the funding approach for this program? 

Other-Encourages county participation in HSIP

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• Other-Run-off-the-road all injury 

crashes

• Functional classification

• Other-Roadway features that 

may be addressed with specific 

countermeasures

What project identification methodology was used for this program? 

• Crash frequency

• Probability of specific crash types

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• Competitive application process

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Available funding:1

Cost Effectiveness:2

What percentage of HSIP funds address systemic improvements?

 52
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 HSIP funds are used to address which of the following systemic 

improvements? 

• Add/Upgrade/Modify/Remove Traffic Signal

• Install/Improve Lighting

• Install/Improve Signing

• Pavement/Shoulder Widening

• Rumble Strips

• Upgrade Guard Rails

What process is used to identify potential countermeasures? 

• Crash data analysis

• Data-driven safety analysis tools (HSM, CMF Clearinghouse, SafetyAnalyst, usRAP)

• Engineering Study

• Road Safety Assessment

• SHSP/Local road safety plan

• Stakeholder input

Does the State HSIP consider connected vehicles and ITS technologies? 

No

IDOT has allowed HSIP funds to be used for smart work zones, changeable message boards, and ramp 

metering.

Does the State use the Highway Safety Manual to support HSIP efforts?

Yes

Please describe how the State uses the HSM to support HSIP efforts.

The HSM was used as a basis for developing Illinois calibrated safety performance functions (SPFs). These 

SPFs have been used in the development of Illinois’ safety tiers and other tools which assist in HSIP 

identification and approval process. Each HSIP application requires a benefit/cost analysis using proven, highquality countermeasures from the CMF Clearinghouse and HSM. HSIP projects completed from 2007 – 2015 

were evaluated using methods found in the HSM. Last year IDOT updated its state safety tiers based on 2014 

- 2018 crash data and an update for the local tiers based on more recent crash data is in development.
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Project Implementation

Funds Programmed

Reporting period for HSIP funding.

State Fiscal Year

July 1, 2019 - June 30, 2020

Enter the programmed and obligated funding for each applicable funding category.

FUNDING CATEGORY PROGRAMMED OBLIGATED % 

OBLIGATED/PROGRAMMED

HSIP (23 U.S.C. 148) $79,799,417 $79,799,417 100%

HRRR Special Rule (23 

U.S.C. 148(g)(1))

$0 $0 0%

Penalty Funds (23 U.S.C. 

154)

$0 $0 0%

Penalty Funds (23 U.S.C. 

164)

$0 $0 0%

RHCP (for HSIP 

purposes) (23 U.S.C. 

130(e)(2))

$0 $0 0%

Other Federal-aid Funds 

(i.e. STBG, NHPP)

$0 $0 0%

State and Local Funds $0 $0 0%

Totals $79,799,417 $79,799,417 100%

While Illinois was not in penalty and did not have to spend HRRR funding, Illinois has been keeping a list of 

projects with HRRR locations.

How much funding is programmed to local (non-state owned and operated) or tribal 

safety projects?

20%

How much funding is obligated to local or tribal safety projects?

20%

Illinois usually sets aside 20% of funding for locals, but did transfer additional funding.

How much funding is programmed to non-infrastructure safety projects?

$0

How much funding is obligated to non-infrastructure safety projects?

$0
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How much funding was transferred in to the HSIP from other core program areas 

during the reporting period under 23 U.S.C. 126?

0%

How much funding was transferred out of the HSIP to other core program areas during 

the reporting period under 23 U.S.C. 126?

0%

Discuss impediments to obligating HSIP funds and plans to overcome this challenge in 

the future.

In the past, obstacles to the obligation of HSIP funds included the obtainment of right of way, compliance with 

the federal National Environmental Policy Act, and Buy America. Purchasing right of way can sometimes be a 

tedious and drawn out process depending on the roadway owner and purchase amount. The National 

Environmental Policy Act can cause issues at site locations by prohibiting or limiting what construction can take 

place. Buy America has caused issues with several recent projects as the requested equipment to be 

purchased—moveable barrier wall to be used in construction zones, and a pavement striper to be used for 

striping unmarked rural roads—as every single piece of the equipment could not be guaranteed to be made in 

America.

These obstacles are still present, but due to COVID 19, IDOT's HSIP is beginning to see other obstacles 

emerge in the past year. Several districts and local agencies have asked for time extensions due to COVID 19 

complications, or additional funding. Over the past year construction materials have become harder to come 

by, have increased wait times, and have increased in price due to COVID 19. IDOT is expecting to see COVID 

19 related obstacles to continue for the next few years.
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General Listing of Projects

List the projects obligated using HSIP funds for the reporting period.

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

201203008 Intersection 

traffic control

Modify traffic signal –

modernization/replacement

1 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther69,000 35 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201212010 Intersection 

traffic control

Modify traffic signal –

modernization/replacement

1 Intersections $0 $819000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther26,500 40 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201212016 Intersection 

traffic control

Modify traffic signal –

modernization/replacement

1 Intersections $0 $584000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther46,100 30 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201212024 Intersection 

geometry

Add/modify auxiliary lanes 2 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther12,650 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201308002 Roadway Rumble strips – edge or 

shoulder

4.84 Miles $0 $4506000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 6,700 55 State 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201310005 Intersection 

traffic control

Modify traffic signal –

modernization/replacement

1 Intersections $0 $1473000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther74,500 40 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201312006 Intersection 

geometry

Add/modify auxiliary lanes 1 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther48,000 45 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201406004 Roadway Rumble strips – edge or 

shoulder

2.7 Miles $0 $1496000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther22,600 45 State 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201409011 Intersection 

geometry

Intersection realignment 1 Intersections $0 $3500000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther13,250 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201410265 Intersection 

traffic control

Modify control – Modern 

Roundabout

1 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther11,900 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 
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PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

201501007 Roadway Superelevation / cross 

slope

2 Curves $0 $45000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 6,500 35 City or 

Municipal 

Highway 

Agency

Spot Lane 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201502013 Intersection 

geometry

Add/modify auxiliary lanes 3 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 10,000 45 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201505032 Roadway Roadway widening - travel 

lanes

0.72 Miles $0 $1298000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Local Road or 

Street

400 55 County 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201610003 Roadway Rumble strips – edge or 

shoulder

1 Miles $0 $1216000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 32,450 45 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201612006 Roadway Superelevation / cross 

slope

8 Curves $0 $0 HSIP (23 

U.S.C. 148)

Urban Major Collector 2,000 40 County 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201701007 Roadside Barrier- metal 57 Locations $0 $383000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Major Collector 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201707002 Intersection 

traffic control

Modify traffic signal – add 

flashing yellow arrow

9 Intersections $0 $1800000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther21,800 35 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

201709003 Intersection 

traffic control

Modify traffic signal – add 

backplates with 

retroreflective borders

16 Intersections $0 $473000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 20,000 45 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

201712002 Roadside Barrier end treatments 

(crash cushions, terminals)

11 Locations $0 $999000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Multiple/Varies 20,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712003 Roadside Barrier end treatments 

(crash cushions, terminals)

184 Locations $0 $0 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 
2021 Illinois Highway Safety Improvement Program

Page 20 of 43

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

respective 

lanes

201712004 Roadside Barrier end treatments 

(crash cushions, terminals)

437 Locations $0 $1111000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Multiple/Varies Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712005 Roadway Rumble strips – edge or 

shoulder

4.9 Miles $0 $566000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Major Collector 750 55 County 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712008 Roadside Barrier end treatments 

(crash cushions, terminals)

84 Locations $0 $0 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712009 Roadside Barrier end treatments 

(crash cushions, terminals)

181 Locations $0 $890000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712011 Roadside Barrier end treatments 

(crash cushions, terminals)

79 Locations $0 $1050000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712016 Roadside Barrier end treatments 

(crash cushions, terminals)

152 Locations $0 $1030000 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Multiple/Varies 2,000 55 County 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712021 Intersection 

geometry

Splitter island – install on 

one or more approaches

4 Approaches $0 $498000 HSIP (23 

U.S.C. 148)

Rural Major Collector 1,400 55 County 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201712024 Shoulder 

treatments

Widen shoulder – paved or 

other (includes add 

shoulder)

14 Miles $0 $0 HRRR 

Special Rule 

(23 U.S.C. 

148(g)(1))

Rural Major Collector 650 55 County 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201712033 Intersection 

traffic control

Modify traffic signal –other 1245 Signal heads $0 $684000 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 2,000 55 County 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 
2021 Illinois Highway Safety Improvement Program

Page 21 of 43

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

201801001 Lighting Continuous roadway 

lighting

1.55 Miles $0 $7834000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther71,700 35 State 

Highway 

Agency

Systemic Pedestrians Enhance 

Pedestrian 

Safety

201801005 Roadside Barrier end treatments 

(crash cushions, terminals)

18.3 Miles $0 $881000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 72,300 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201802001 Roadway Rumble strips – edge or 

shoulder

6.7 Miles $0 $0 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther5,250 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201803004 Roadway Rumble strips – edge or 

shoulder

6.34 Miles $0 $1300000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 5,050 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201805001 Intersection 

traffic control

Intersection flashers –signmounted or overhead1 Intersections $0 $100000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 5,075 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201810008 Roadside Barrier end treatments 

(crash cushions, terminals)

31 Locations $0 $310000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 25,000 45 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201810010 Roadside Barrier end treatments 

(crash cushions, terminals)

54 Locations $0 $540000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 25,000 45 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201811004 Intersection 

traffic control

Modify traffic signal – add 

additional signal heads

1 Intersections $0 $889000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther36,700 30 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201811005 Intersection 

traffic control

Modify traffic signal – add 

additional signal heads

1 Intersections $0 $717000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther54,250 40 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201812004 Roadside Increase clear zone –

tangent

4.47 Miles $0 $0 HSIP (23 

U.S.C. 148)

Rural Major Collector 4,750 55 State 

Highway 

Agency

Spot Roadway 

Departure

Tree 

Removal for 

New 

Shoulders
2021 Illinois Highway Safety Improvement Program

Page 22 of 43

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

201901003 Access 

management

Raised island - install new 0.6 Miles $0 $1154000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther53,100 35 State 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201903009 Intersection 

traffic control

Modify traffic signal – add 

flashing yellow arrow

1 Intersections $0 $342000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther4,700 45 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

201903011 Intersection 

traffic control

Modify traffic signal timing –

left-turn phasing

1 Intersections $0 $276000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 51,700 35 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

201903012 Roadway Rumble strips – edge or 

shoulder

15.52 Miles $0 $0 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 2,500 55 State 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201904002 Intersection 

traffic control

Modify traffic signal – add 

flashing yellow arrow

5 Intersections $0 $1500000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther6,976 30 State 

Highway 

Agency

Intersections Enhance 

intersection 

safety 

performance 

201905003 Roadside Barrier end treatments 

(crash cushions, terminals)

17 Locations $0 $583000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 25,000 45 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201905004 Roadside Barrier end treatments 

(crash cushions, terminals)

19 Locations $0 $388000 HSIP (23 

U.S.C. 148)

Urban Multiple/Varies 25,000 45 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

201907001 Pedestrians and 

bicyclists

Medians and pedestrian 

refuge areas

4 Intersections $0 $531000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 11,300 30 State 

Highway 

Agency

Systemic Pedestrians Enhance 

Pedestrian 

Safety

201907002 Intersection 

traffic control

Modify control – Modern 

Roundabout

1 Intersections $0 $0 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 10,000 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201907005 Roadside Barrier end treatments 

(crash cushions, terminals)

20 Locations $0 $1011000 HSIP (23 

U.S.C. 148)

Rural Multiple/Varies 15,000 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes
2021 Illinois Highway Safety Improvement Program

Page 23 of 43

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

201911001 Intersection 

traffic control

Modify traffic signal timing –

left-turn phasing

1 Intersections $0 $75000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 9,600 55 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

201912025 Intersection 

traffic control

Modify traffic signal – add 

additional signal heads

3 Intersections $0 $2181000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther42,900 50 County 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

202001006 Roadway Rumble strips – edge or 

shoulder

8.56 Miles $0 $1887000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther3,675 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

202001011 Intersection 

geometry

Innovative Intersection 

(e.g. MUT, RCUT, QR)

1 Intersections $0 $1000000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther9,663 65 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 

202002008 Advanced 

technology and 

ITS

Dynamic message signs 4 Locations $0 $1100000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate67,600 55 State 

Highway 

Agency

Systemic Work Zones Message 

Boards to 

communicate 

congested 

area and 

back ups

202002009 Roadside Barrier end treatments 

(crash cushions, terminals)

21 Locations $0 $3193000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 5,600 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

202004001 Intersection 

traffic control

Modify traffic signal – add 

flashing yellow arrow

1 Intersections $0 $235000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther5,026 55 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

202004001 Roadway Rumble strips – edge or 

shoulder

2.68 Miles $0 $295000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther5,026 55 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

202005001 Advanced 

technology and 

ITS

Advanced technology and 

ITS - other

1 Work Zones 

- On Call

$0 $500000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther Freeways & 

Expressways

20,000 55 State 

Highway 

Agency

Systemic Work Zones Reduce 

Crashes in 

Work Zones

202005002 Intersection 

geometry

Splitter island – install on 

one or more approaches

1 Intersections $0 $957000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther23,900 40 State 

Highway 

Agency

Spot Intersections Enhance 

intersection 

safety 

performance 
2021 Illinois Highway Safety Improvement Program

Page 24 of 43

PROJECT 

NAME

IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

202006001 Intersection 

traffic control

Modify traffic signal – add 

backplates with 

retroreflective borders

46 Intersections $0 $350000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther25,000 55 State 

Highway 

Agency

Systemic Intersections Enhance 

intersection 

safety 

performance 

202006004 Roadside Barrier – cable 2.3 Miles $0 $1000000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate187,000 70 State 

Highway 

Agency

Systemic Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

202007001 Advanced 

technology and 

ITS

Advanced technology and 

ITS - other

4 Locations $0 $200000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate6,700 30 State 

Highway 

Agency

Systemic Intersections Time lane 

Control

202008004 Roadway Rumble strips – edge or 

shoulder

5.5 Miles $0 $1250000 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther9,150 55 State 

Highway 

Agency

Spot Roadway 

Departure

Keep 

vehicles in 

their 

respective 

lanes

202008006 Miscellaneous Equipment 1 Mobile 

Barrier 

System

$0 $350000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther25,000 55 State 

Highway 

Agency

Systemic Work Zones Provide 

Positive 

Protection in 

Work Zones
2021 Illinois Highway Safety Improvement Program

Page 25 of 43

Safety Performance

General Highway Safety Trends

Present data showing the general highway safety trends in the State for the past five 

years.

PERFORMANCE 

MEASURES 2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities 918 956 991 924 998 1,078 1,035 1,009 1,191

Serious Injuries 11,939 12,398 12,300 11,748 12,844 11,622 11,344 9,685 8,560

Fatality rate (per 

HMVMT)

0.889 0.914 0.941 0.881 0.948 1.005 0.958 0.938 1.267

Serious injury rate (per 

HMVMT)

11.565 11.855 11.681 11.199 12.206 10.830 10.497 9.000 9.106

Number nonmotorized fatalities166 170 156 155 178 173 190 190 199

Number of nonmotorized serious 

injuries

1,307 1,334 1,283 1,292 1,574 1,207 1,401 1,365 1,084
2021 Illinois Highway Safety Improvement Program

Page 26 of 43

0

200

400

600

800

1000

1200

1400

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities 5 Year Rolling Avg.

Annual Fatalities

0

2000

4000

6000

8000

10000

12000

14000

2012 2013 2014 2015 2016 2017 2018 2019 2020

Serious Injuries 5 Year Rolling Avg.

Annual Serious Injuries
2021 Illinois Highway Safety Improvement Program

Page 27 of 43

0

0.2

0.4

0.6

0.8

1

1.2

1.4

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatality rate (per HMVMT) 5 Year Rolling Avg.

Fatality rate (per HMVMT)

0

2

4

6

8

10

12

14

2012 2013 2014 2015 2016 2017 2018 2019 2020

Serious injury rate (per HMVMT) 5 Year Rolling Avg.

Serious injury rate (per HMVMT)
2021 Illinois Highway Safety Improvement Program

Page 28 of 43

Describe fatality data source.

FARS

FARS

IDOT also keeps track of fatalities and serious injury crashes through its Bureau of Data Collection. The 

Bureau of Data Collection creates GIS crash layers for each year of data and is responsible for reporting 

Illinois fatality data to FARS.

To the maximum extent possible, present this data by functional classification and 

ownership.

Year 2020

Functional 

Classification

Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

Rural Principal 

Arterial (RPA) - 

Interstate

46 171 0.45 1.82

Rural Principal 

Arterial (RPA) - Other 

Freeways and 

Expressways

1 5 0.61 3.07

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities Serious Injuries 5 Year Rolling Avg.

Non Motorized Fatalities and Serious Injuries
2021 Illinois Highway Safety Improvement Program

Page 29 of 43

Functional 

Classification

Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

Rural Principal 

Arterial (RPA) - Other

51 250 1.34 6.58

Rural Minor Arterial 82 409 1.88 9.36

Rural Minor Collector 14 78 2.69 14.97

Rural Major Collector 103 436 2.68 11.34

Rural Local Road or 

Street

108 863 2.04 16.27

Urban Principal 

Arterial (UPA) - 

Interstate

148 535 0.62 2.22

Urban Principal 

Arterial (UPA) - Other 

Freeways and 

Expressways

2 30 0.17 2.57

Urban Principal 

Arterial (UPA) - Other

219 1,471 1.12 7.49

Urban Minor Arterial 159 1,500 1.06 9.95

Urban Minor Collector 11 142 1.31 16.87

Urban Major Collector 99 1,155 1.25 14.59

Urban Local Road or 

Street

133 1,637 9.01 110.92
2021 Illinois Highway Safety Improvement Program

Page 30 of 43

Year 2019

Roadways Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

State Highway 

Agency

0 0 0 0

County Highway 

Agency

0 0 0 0

Town or Township 

Highway Agency

0 0 0 0

City or Municipal 

Highway Agency

0 0 0 0

State Park, Forest, or 

Reservation Agency

0 0 0 0

Local Park, Forest or 

Reservation Agency

0 0 0 0

Other State Agency 0 0 0 0

Other Local Agency 0 0 0 0

Private (Other than 

Railroad)

0 0 0 0

Railroad 0 0 0 0

State Toll Authority 0 0 0 0

Local Toll Authority 0 0 0 0

Other Public 

Instrumentality (e.g. 

Airport, School, 

University)

0 0 0 0

Indian Tribe Nation 0 0 0 0

Safety Performance Targets

Safety Performance Targets

Calendar Year 2022 Targets *

Number of Fatalities:1000.0

Describe the basis for established target, including how it supports SHSP goals.

The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% 

reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year 
2021 Illinois Highway Safety Improvement Program

Page 31 of 43

will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT 

can meet its goal.

Number of Serious Injuries:11556.4

Describe the basis for established target, including how it supports SHSP goals.

The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% 

reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year 

will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT 

can meet its goal.

Fatality Rate:0.930

Describe the basis for established target, including how it supports SHSP goals.

The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% 

reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year 

will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT 

can meet its goal.

Serious Injury Rate:10.328

Describe the basis for established target, including how it supports SHSP goals.

The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% 

reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year 

will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT 

can meet its goal.

Total Number of Non-Motorized Fatalities and Serious Injuries:1512.2

Describe the basis for established target, including how it supports SHSP goals.

The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% 

reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year 

will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT 

can meet its goal.

Describe efforts to coordinate with other stakeholders (e.g. MPOs, SHSO) to establish 

safety performance targets. 

IDOT acknowledges there might be issues with an annual 2% decrease, especially given the peak in crashes 

last year due to COVID-19, and how presumably 2021 will end with more fatalities than 2020. IDOT is 

reviewing FARS and state crash data and still discussing data-driven only targets versus a mix of data-driven 

and aspirational targets. If changes were made, IDOT will work together to develop a plan with stakeholders 

such as MPOs, NHTSA, FHWA and others.

In the past year, targets were provided to MPO’s and BSPE provided assistance to their staffs as requested.

Past methodology involved developing using linear regression to develop statistical relations for each 

performance measures including a five-year average, ordinary least squared and exponential smoothing 

models to assess their fit with safety performance historic trends and account for future indications and 

influences. First state targets were set, followed by working with MPOs and local agencies to set targets 

specific to them and their needs.
2021 Illinois Highway Safety Improvement Program

Page 32 of 43

Does the State want to report additional optional targets? 

No

Describe progress toward meeting the State’s 2020 Safety Performance Targets (based 

on data available at the time of reporting). For each target, include a discussion of any 

reasons for differences in the actual outcomes and targets.

PERFORMANCE MEASURES TARGETS ACTUALS

Number of Fatalities 985.0 1062.2

Number of Serious Injuries 11668.7 10811.0

Fatality Rate 0.910 1.023

Serious Injury Rate 10.800 10.328

Non-Motorized Fatalities and 

Serious Injuries

1456.2 1512.2

Illinois did meet the serious injury rate and non-motorized fatalities and serious injuries, and number of serious 

injuries, but like past years failed to meet number of fatalities and fatality rate. In regards to the fatality and 

fatality rate, IDOT believes that zero is the only acceptable number for fatalities and serious injuries and 

therefore set an aggressive ideal 2% reduction rate rather than a realistic reduction rate like other states have. 

Illinois is continuing to look at innovative program and initiatives such as creating flyers and tools, reaching out 

to the locals, and providing more guidance and feedback to the districts to increase quality HSIP project 

submissions. However, it is a slow process that takes time to implement and see results.

Applicability of Special Rules

Does the HRRR special rule apply to the State for this reporting period? 

No

Provide the number of older driver and pedestrian fatalities and serious injuries 65 

years of age and older for the past seven years.

PERFORMANCE 

MEASURES 2014 2015 2016 2017 2018 2019 2020

Number of Older Driver 

and Pedestrian Fatalities

146 158 176 157 145 180 0

Number of Older Driver 

and Pedestrian Serious 

Injuries

905 1,016 893 989 1,024 985 0
2021 Illinois Highway Safety Improvement Program

Page 33 of 43

Evaluation 

Program Effectiveness

How does the State measure effectiveness of the HSIP?

• Benefit/Cost Ratio

• Change in fatalities and serious injuries

• Other-naive before-after studies for specific projects

• Other-Statewide fatal and serious injuries, local route fatal and serious injuries and performance 

measures by emphasis area 

• Other-Empirical Bayes (EB) methods for projects and the program

Based on the measures of effectiveness selected previously, describe the results of 

the State's program level evaluations.

As 2019 and 2020 crash data was only finalized a few months ago, BSPE has not had enough time to properly 

evaluate an update of its program's effectiveness.

What other indicators of success does the State use to demonstrate effectiveness and 

success of the Highway Safety Improvement Program?

• Increased awareness of safety and data-driven process

• Increased focus on local road safety

Effectiveness of Groupings or Similar Types of Improvements

Present and describe trends in SHSP emphasis area performance measures.

Year 2020

SHSP Emphasis Area Targeted 

Crash Type

Number of 

Fatalities

(5-yr avg)

Number of 

Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury 

Rate

(per HMVMT)

(5-yr avg)

Distracted/Fatigued/Drowsy 33.2 598.6 0.03 0.57

Heavy Vehicle 148.8 765.8 0.14 0.73

Impaired Driver 765.8 1,263 0.47 1.2

Intersection Related 266.2 4,412.6 0.25 4.2

Motorcycle 134.6 805.8 0.13 0.77

Older Driver 223.2 1,817.4 0.21 1.73

Pedalcyclist 21.8 353.6 0.02 0.34

Pedestrian 162.8 996 0.16 0.95

Roadway Departure 540.4 3,186.4 0.51 3.03
2021 Illinois Highway Safety Improvement Program

Page 34 of 43

SHSP Emphasis Area Targeted 

Crash Type

Number of 

Fatalities

(5-yr avg)

Number of 

Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury 

Rate

(per HMVMT)

(5-yr avg)

Speeding/Agressive Driving 239.8 2,127.6 0.23 2.03

Highway-Railroad Grade 

Crossing

8 8.4 0.01 0.01

Unrestrained Occupants 319.2 1,224.8 0.3 1.17

Work Zones 32.2 194.8 0.03 0.19

Young Driver 136 1,846 0.13 1.76
2021 Illinois Highway Safety Improvement Program

Page 35 of 43

0

100

200

300

400

500

600

700

800

900

Fatalities

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Number of Fatalities 

5 Year Average

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

Serious Injuries

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Number of Serious Injuries 

5 Year Average
2021 Illinois Highway Safety Improvement Program

Page 36 of 43

Has the State completed any countermeasure effectiveness evaluations during the 

reporting period?

No

0

0.1

0.2

0.3

0.4

0.5

0.6

Fatality Rate

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Fatality Rate (per HMVMT) 

5 Year Average

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Serious Injury Rate

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Serious Injury Rate (per HMVMT) 

5 Year Average
2021 Illinois Highway Safety Improvement Program

Page 37 of 43

As 2019 and 2020 crash data was only finalized a few months ago, IDOT has not had a chance to properly 

review the data and provide updates on the countermeasures effectiveness since last year.
2021 Illinois Highway Safety Improvement Program

Page 38 of 43

Project Effectiveness

Provide the following information for previously implemented projects that the State evaluated this reporting period. 
2021 Illinois Highway Safety Improvement Program

Page 39 of 43

Compliance Assessment

What date was the State’s current SHSP approved by the Governor or designated State representative?

 07/28/2017

What are the years being covered by the current SHSP?

From: 2017 To: 2022

When does the State anticipate completing it’s next SHSP update?

 2022

Provide the current status (percent complete) of MIRE fundamental data elements collection efforts using the table below. 

*Based on Functional Classification (MIRE 1.0 Element Number) [MIRE 2.0 Element Number]

ROAD TYPE *MIRE NAME (MIRE

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

ROADWAY SEGMENT Segment Identifier 

(12) [12]

100 100 100 100 100 100

Route Number (8) 

[8]

100 100

Route/Street Name 

(9) [9]

100 100

Federal Aid/Route 

Type (21) [21]

100 100

Rural/Urban 

Designation (20) [20]

100 100 100 100

Surface Type (23) 

[24]

100 100 100 100

Begin Point 

Segment Descriptor 

(10) [10]

100 100 100 100 100 100

End Point Segment 

Descriptor (11) [11]

100 100 100 100 100 100

Segment Length 

(13) [13]

100 100

Direction of 

Inventory (18) [18]

100 100

Functional Class 

(19) [19]

100 100 100 100 100 100
2021 Illinois Highway Safety Improvement Program

Page 40 of 43

ROAD TYPE *MIRE NAME (MIRE 

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

Median Type (54) 

[55]

100 100

Access Control (22) 

[23]

100 100

One/Two Way 

Operations (91) [93]

100 100

Number of Through 

Lanes (31) [32]

100 100 100 100

Average Annual 

Daily Traffic (79) [81]

100 100 100 100

AADT Year (80) [82] 100 100

Type of 

Governmental 

Ownership (4) [4]

100 100 100 100 100 100

INTERSECTION Unique Junction 

Identifier (120) [110]

100 100

Location Identifier 

for Road 1 Crossing 

Point (122) [112]

100 100

Location Identifier 

for Road 2 Crossing 

Point (123) [113]

100 100

Intersection/Junction 

Geometry (126) 

[116]

100 100

Intersection/Junction 

Traffic Control (131) 

[131]

100 100

AADT for Each 

Intersecting Road 

(79) [81]

100 100

AADT Year (80) [82] 100 100

Unique Approach 

Identifier (139) [129]

100 100

INTERCHANGE/RAMP Unique Interchange 

Identifier (178) [168]

100 100

Location Identifier 

for Roadway at 

100 100
2021 Illinois Highway Safety Improvement Program

Page 41 of 43

ROAD TYPE *MIRE NAME (MIRE

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

Beginning of Ramp 

Terminal (197) [187]

Location Identifier 

for Roadway at 

Ending Ramp 

Terminal (201) [191]

100 100

Ramp Length (187) 

[177]

100 100

Roadway Type at 

Beginning of Ramp 

Terminal (195) [185]

100 100

Roadway Type at 

End Ramp Terminal 

(199) [189]

100 100

Interchange Type 

(182) [172]

100 100

Ramp AADT (191) 

[181]

100 100

Year of Ramp AADT 

(192) [182]

100 100

Functional Class 

(19) [19]

100 100

Type of 

Governmental 

Ownership (4) [4]

100 100

Totals (Average Percent Complete): 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00

*Based on Functional Classification (MIRE 1.0 Element Number) [MIRE 2.0 Element Number]

Describe actions the State will take moving forward to meet the requirement to have complete access to the MIRE fundamental data elements on all public roads by September 30, 2026.

Illinois has met the MIRE fundamentals data elements requirements.
Page 42 of 43

2021 Illinois Highway Safety Improvement Program

Optional Attachments 

Program Structure:

SAFETY 1.06 - Safety Engineering Policy Memorandum.pdf

Project Implementation:

Safety Performance:

Evaluation:

Compliance Assessment:
2021 Illinois Highway Safety Improvement Program

Page 43 of 43

Glossary

5 year rolling average: means the average of five individuals, consecutive annual points of data 

(e.g. annual fatality rate).

Emphasis area: means a highway safety priority in a State’s SHSP, identified through a data-driven, 

collaborative process.

Highway safety improvement project: means strategies, activities and projects on a public road 

that are consistent with a State strategic highway safety plan and corrects or improves a hazardous 

road location or feature or addresses a highway safety problem.

HMVMT: means hundred million vehicle miles traveled.

Non-infrastructure projects: are projects that do not result in construction. Examples of noninfrastructure projects include road safety audits, transportation safety planning activities, 

improvements in the collection and analysis of data, education and outreach, and enforcement 

activities.

Older driver special rule: applies if traffic fatalities and serious injuries per capita for drivers and 

pedestrians over the age of 65 in a State increases during the most recent 2-year period for which 

data are available, as defined in the Older Driver and Pedestrian Special Rule Interim Guidance 

dated February 13, 2013.

Performance measure: means indicators that enable decision-makers and other stakeholders to 

monitor changes in system condition and performance against established visions, goals, and 

objectives.

Programmed funds: mean those funds that have been programmed in the Statewide Transportation 

Improvement Program (STIP) to be expended on highway safety improvement projects.

Roadway Functional Classification: means the process by which streets and highways are 

grouped into classes, or systems, according to the character of service they are intended to provide.

Strategic Highway Safety Plan (SHSP): means a comprehensive, multi-disciplinary plan, based on 

safety data developed by a State Department of Transportation in accordance with 23 U.S.C. 148.

Systematic: refers to an approach where an agency deploys countermeasures at all locations across 

a system.

Systemic safety improvement: means an improvement that is widely implemented based on high 

risk roadway features that are correlated with specific severe crash types.

Transfer: means, in accordance with provisions of 23 U.S.C. 126, a State may transfer from an 

apportionment under section 104(b) not to exceed 50 percent of the amount apportioned for the fiscal 

year to any other apportionment of the State under that section.