South Carolina

Highway Safety Improvement Program

2016 Annual Report

Prepared by: SC
ii

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. 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.”
iii

Table of Contents

Disclaimer...................................................................................................................................................... ii

Executive Summary....................................................................................................................................... 1

Introduction .................................................................................................................................................. 1

Program Structure ........................................................................................................................................ 1

Program Administration ........................................................................................................................... 1

Program Methodology.............................................................................................................................. 6

Progress in Implementing Projects............................................................................................................... 9

Funds Programmed............................................................................................................................... 9

General Listing of Projects.................................................................................................................. 12

Progress in Achieving Safety Performance Targets .................................................................................... 28

Overview of General Safety Trends........................................................................................................ 28

Application of Special Rules.................................................................................................................... 43

Assessment of the Effectiveness of the Improvements (Program Evaluation) ..........................................44

SHSP Emphasis Areas.............................................................................................................................. 46

Groups of similar project types............................................................................................................... 50

Systemic Treatments............................................................................................................................... 51

Project Evaluation....................................................................................................................................... 54

Glossary....................................................................................................................................................... 63
2016 South Carolina Highway Safety Improvement Program

1

Executive Summary

This report provides an overview of SCDOT's administration of the Highway Safety Improvement 

Program (HSIP). SCDOT's HSIP has a primary focus on state-maintained roads since nearly 96 percent of 

fatal crashes and the vast majority of severe crashes occur on the state system. This report covers 

funding obligations from January 1, 2015 to December 31, 2015.

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 MAP-21 Reporting Guidance dated February 13, 2013 and consists 

of four sections: program structure, progress in implementing HSIP projects, 

progress in achieving safety performance targets, and assessment of the 

effectiveness of the improvements. 

Program Structure

Program Administration

How are Highway Safety Improvement Program funds allocated in a State? 

Central

Describe how local roads are addressed as part of Highway Safety Improvement Program.

In South Carolina, the vast majority (~96%) of fatal crashes occur on state-maintained roadways. Due to 

this statistic, our primary focus for safety has been on state-maintained roadways. However, we 

have recently planned for some intersection improvement projects where a local road intersects with a 

state-owned road. Additionally, as our crash data is improving in accessibility and completeness, we will 

incorporate local roads into our safety funding if a viable need is observed. 

It is also worth noting that South Carolina maintains the fourth largest highway system in the nation at 

nearly 41,400 center-line miles of roadway, despite a land area of roughly 32,000 square 
2016 South Carolina Highway Safety Improvement Program

2

miles. Furthermore, 19% of all public roads in the nation are state maintained while South Carolina's 

public roads encompass 54% of its total roadway miles.

Identify which internal partners are involved with Highway Safety Improvement Program planning. 

Design

Planning

Maintenance

Operations

Briefly describe coordination with internal partners. 

Several partners within SCDOT and consultants are involved thoughout the process of HSIP 

planning. Many of our safety improvements are designed by our Safety Project group within Traffic 

Engineering and they are involved with project design or oversight on all projects to ensure proper 

designs. Our Planning office is consulted during the selection process to determine if any qualifying 

projects have been identified for improvements through other funding sources such as the Metropolitan 

Planning Organizations (MPOs) or Council of Governments (COGs). Our Maintenance office is also 

contacted to ensure that there are no conflicting maintenance activities such as resurfacing or pavement 

marking contracts that involve overlapping work. Operations are monitored through other Traffic 

Engineering offices or consultants to ensure that all projects include consideration of proper traffic 

operations by conducting traffic volume counts, Synchro analysis, signal operations, etc. 

Identify which external partners are involved with Highway Safety Improvement Program planning. 

Metropolitan Planning Organizations

Governors Highway Safety Office

Local Government Association

Identify any program administration practices used to implement the HSIP that have changed since 

the last reporting period.

Other-No changes have been made since the last reporting period
2016 South Carolina Highway Safety Improvement Program

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Describe any other aspects of Highway Safety Improvement Program Administration on which you 

would like to elaborate.

Highway Safety Improvement Program Process

Every state is required by the federal government to administer a Highway Safety Improvement Program 

(HSIP). Part 924 of Title 23 of the Code of Federal Regulations (CFR) states, in part:

924.5 Policy. “Each state shall develop and implement, on a continuing basis, a highway safety 

improvement program which has the overall objective of reducing the number and severity of accidents 

and decreasing the potential for accidents on all highways.”

924.7 Program Structure. “The highway safety improvement program in each state shall consist of 

components for planning, implementation, and evaluation of safety programs and projects.”

The purpose of the South Carolina HSIP is to establish guidelines for the effective use of available funds, 

to reduce the number and severity of crashes and to decrease the potential for crashes on highways in 

the state. 

The program consists of the following three components: planning, implementation, and evaluation.

 

1. PLANNING 

a. Data Management 

In order to locate hazardous locations the following information is essential:

• Crash data – Crash reports are provided by DPS. 

• Traffic data – Traffic volumes are provided by the Traffic Engineering.

• Roadway Data – Road characteristics are provided by the Traffic Engineering.

b. Identify Hazardous Locations

Using the information listed above, potential locations are identified by:

• Recommendations from SCDOT and FHWA personnel.

• Requests from governmental units other than SCDOT and FHWA.

• Requests from citizens. 

• Ongoing research of all fatal crash reports received from DPS.

• Ongoing research of the HSIP database.

The HSIP database has been established to identify, prioritize, and provide guidance for selecting 

potential projects. The information gathered for a location is analyzed using the following methods: 
2016 South Carolina Highway Safety Improvement Program

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• Crash Rate – Equates frequency of crashes to traffic volumes (and length of roadway if section). 

A typical crash rate would be expressed in # of crashes per million vehicles entering (if 

intersection) or per one hundred million vehicle miles of travel (if section).

 Severity Rate – A weighted calculation for determining the severity of the crashes. It is based on 

the EPDO (Equivalent Property Damage Only) method from studies performed by the National Safety 

Council and the Traffic Institute at Northwestern University. The severity indices used are listed below: 

(from the Traffic Institute at Northwestern University)

Fatality = 12

Injury = 3

Property Damage Only = 1

• Rate Quality 

This method entails the calculation of the crash rate at each location and a statistical test to 

determine if that rate is significantly higher than crash rates for other locations with similar 

characteristics.

The critical rate is compared to the actual crash rate for each location. If the actual crash rate exceeds 

the critical rate, then the location may be considered for improvement. 

• Number-Rate 

Combines crash frequency and crash rate methods by first ranking by the number of 

crashes. Establishes a frequency threshold and then re-ranks the locations. Based on a crash rate 

threshold, locations with lower crash rates are eliminated. 

c. Conduct Engineering Studies 

Once a potential project location has been identified, the following steps are taken to determine if 

geometric improvements can be implemented that will reduce the volume and severity of the crashes 

reported at the location. 

• Analyze Project Location

Crash reports are obtained and analyzed for locations selected for detailed review. Results from 

analyses along with engineering judgment are used to determine if further investigation is 

needed along with site review.

• Develop Candidate Countermeasures and Project Proposals

Site reviews are conducted to determine characteristics of locations relative to types of crashes 

occurring. Improvements are recommended to address patterns in crashes.
2016 South Carolina Highway Safety Improvement Program

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• Establish Project Priorities 

Estimate costs for recommended improvements at each site along with expected reduction in 

crashes for these improvements. Summarize estimated costs and benefits for improvements 

and determine the most cost effective improvement alternative for a location using the Net 

Benefit Method along with engineering judgment.

The net benefit method compares the estimated annual costs of implementing the selected 

countermeasure to the expected annual benefits. The expected annual benefit is calculated 

using the most current “comprehensive costs” of motor vehicle traffic crashes and the 

estimated crash reduction percentage expected as a result of implementing the selected 

countermeasure.

Comprehensive costs are a measure of motor vehicle accident costs that include the effects of 

injury on people's entire lives. This is the most useful measure of accident cost since it includes 

all cost components and places a dollar value on each one. Comprehensive life values are 

estimated by examining risk reduction costs from which the market value of safety is inferred. 

The 11 components of the comprehensive cost are: property damage, lost earnings, lost 

household production, medical costs, emergency services, travel delay, vocational 

rehabilitation, workplace costs, administrative, legal, pain, and lost quality of life. 

 

2. IMPLEMENTATION 

Given that the overall charge of the HSIP program is to reduce the number and severity of crashes, it is 

imperative that the implementation phase be carried out in a timely manner. Once the project has been 

approved for funding, it is necessary to design and schedule the project to implement the 

improvements. All HSIP Projects are managed by one of the following offices:

• Preconstruction 

• Traffic Engineering 

• Consultant

Given the appropriate conditions, a Participation Agreement may be arranged with other governmental 

entities. A participation agreement is a contractual partnership between the SCDOT and one or more 

other governmental entities where funding is combined to complete a project. The agreement includes 

the specifying of the roles, responsibilities, and financial obligations of each participant. 

3. EVALUATION 

 To Determine the Effect of Highway Safety Improvements 

Before and After Studies are conducted on all HSIP projects to evaluate the effectiveness of the overall 

program by observed changes in crash number, rate and severity resulting from program 
2016 South Carolina Highway Safety Improvement Program

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implementation. The HSIP office conducts studies three years after final inspection of a project. The 

studies include:

• Photographs of existing conditions at the site prior to improvements.

• After a period of no less than 3 years after the completion of the project, crash data and the 

most recent traffic volumes are collected for the location.

• The data collected before implementing safety improvements is then compared with the data 

collected after the improvements have been completed.

• The information described above is used to calculate the resulting crash rate reduction factor for 

the improved site. The total cost of the project along with the reduction factor is used to 

conduct a Benefit Cost Analysis to determine the overall effectiveness of the project.

• Photographs of the improved conditions are recorded along with all Benefit Cost Analysis. This 

information is used to help with the selection of future projects.

Program Methodology

Select the programs that are administered under the HSIP. 

Other-Safety Program

Program: Other-Safety Program

Date of Program Methodology: 10/1/2015

 

What data types were used in the program methodology? 

Crashes Exposure Roadway

All crashes

Fatal crashes only

Traffic

Volume

Median width

Fatal and serious injury crashes 

only

Lane miles Functional classification

What project identification methodology was used for this program? 

Crash frequency

Equivalent property damage only (EPDO Crash frequency)

Relative severity index

Crash rate

Critical rate

Excess expected crash frequency using SPFs

Are local roads (non-state owned and operated) included or addressed in this program?
2016 South Carolina Highway Safety Improvement Program

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Yes

If yes, are local road projects identified using the same methodology as state roads?

Yes

How are highway safety improvement projects 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

Ranking based on B/C 3

Available funding 2

Ranking based on net benefit 3

Cost Effectiveness 1

What proportion of highway safety improvement program funds address systemic improvements? 

30%

Highway safety improvement program funds are used to address which of the following systemic 

improvements?

Rumble Strips

Pavement/Shoulder Widening

Safety Edge

Add/Upgrade/Modify/Remove Traffic Signal

What process is used to identify potential countermeasures? 

Engineering Study

Road Safety Assessment
2016 South Carolina Highway Safety Improvement Program

8

Identify any program methodology practices used to implement the HSIP that have changed since the 

last reporting period.

Other-Local roads are considered on limited basis, based on available data.

Describe any other aspects of the Highway Safety Improvement Program methodology on which you 

would like to elaborate. 

Projects selected for the HSIP have historically been based on one of the following analysis methods: 

1. Crash Rate Method 

2. Rate Quality Control Method 

3. Crash Severity Method 

4. Number Rate Method 

In addition to these methods, the Highway Safety Manual provides additional statistical methods and 

safety performance functions that are also being incorporated in the selection process. All of the HSIP 

projects are selected under the framework of the SCDOT Strategic Highway Safety Plan (SHSP) where 

"Safety" is identified as a top priority for the agency. SCDOT released an update to the SHSP in early 

2015, which covers the performance period from 2015 to 2018 and includes updated performance goals 

and emphasis areas based on Moving Ahead for Progress in the 21st Century (MAP-21) requirements. 

SCDOT has adopted the Target Zero initiative as the State's main goal in addressing traffic-related 

deaths. 

HSIP projects are developed in collaboration with the following emphasis areas identified in the 2015 

SHSP which are: 

1. Roadway Departure 

2. Unrestrained Motor Vehicle Occupants 

3. Age-Related 

4. Speed-Related 

5. Vulnerable Roadway Users 

6. Intersection and Other High-Risk Roadway Locations 

7. Impaired Driving 
2016 South Carolina Highway Safety Improvement Program

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8. Commercial Motor Vehicles/ Heavy Trucks 

9. Distracted Driving

10. Safety Data Collection, Access, and Analysis 

Progress in Implementing Projects

Funds Programmed

Reporting period for Highway Safety Improvement Program funding.

Calendar Year

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

How much funding is programmed to local (non-state owned and operated) safety projects? 

$0.00

How much funding is obligated to local safety projects?

$0.00

Funding Category Programmed* Obligated

HSIP (Section 148) $100,618,218.01 45 % $54,415,280.13 31 %

HRRRP (SAFETEA-LU) $205,806.58 0 % $205,806.58 0 %

Penalty Transfer –

Section 164

$13,714,674.76 6 % $13,714,674.76 8 %

Other Federal-aid Funds 

(i.e. STP, NHPP)

$2,977,909.58 1 % $2,545,415.73 1 %

State and Local Funds $107,444,018.03 48 % $104,287,387.24 60 %

Totals $224,960,626.96 100% $175,168,564.44 100%
2016 South Carolina Highway Safety Improvement Program

10

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

$5,250,619.00

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

$5,160,619.00

How much funding was transferred in to the HSIP from other core program areas during the reporting 

period?

$14,600,000.00

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

period?

$2,000,000.00

Discuss impediments to obligating Highway Safety Improvement Program funds and plans to 

overcome this in the future.

Describe any other aspects of the general Highway Safety Improvement Program implementation 

progress on which you would like to elaborate.

The state and local funding provided is higher than previous years due to partnering with a state 

infrastructure bank (SIB) project. Additionally, for this year the programmed and obligated funding 

amounts include advanced construction (AC). AC is used in lieu of an actual obligation as a promise to 

FHWA to commit to the actual obligation at a later time. This funding will be converted into a real 

obligation once expenditures are accrued to the project.

Identification of local roads for safety improvements is hindered by the availability of data. At this time 

not all locals have been mapped in our system and are therefore not considered during the project 

identification phase. SCDOT is working toward mapping all local roads. A completion date for this 

project has not been established.
2016 South Carolina Highway Safety Improvement Program

11
2016 South Carolina Highway Safety Improvement Program

12

General Listing of Projects

List each highway safety improvement project obligated during the reporting period. 

Project Improveme

nt Category 

Output HSIP Cost Total 

Cost

Funding 

Categor

y

Functional 

Classificati

on

AAD

T

Spee

d

Roadway 

Ownersh

ip

Relationship to SHSP

Emphasis 

Area

Strategy

Target Zero 

Media 

Campaign 

MOA-1-15

Noninfrastructur

e 

Educational 

efforts

1 

Numbe

rs

1200000 1200000 Penalty 

Transfer 

- Section 

154

0 0 State 

Highway 

Agency

Education

Target Zero 

Campaign 

TRA-1-15

Noninfrastructur

e 

Enforcemen

t

1 

Numbe

rs

2000000 2000000 Penalty 

Transfer 

- Section 

154

0 0 State 

Highway 

Agency

Enforceme

nt

Provide 

targeted 

enforceme

nt with an 

empahsis 

on 

S-179 (E 

McIver Road)

Shoulder 

treatments 

Shoulder 

treatments -

other

2.93 

Miles

403206.2

6

403206.2

6

Penalty 

Transfer 

- Section 

154

Rural 

Major 

Collector

6400 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-13 (E 

National 

Cemetery Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

9.87 

Miles

858066.3

3

858066.3

3

Penalty 

Transfer 

- Section 

154

Rural 

Major 

Collector

2139 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro
2016 South Carolina Highway Safety Improvement Program

13

S-627 

(Pleasant 

View Dr/ 

Redmond Rd/ 

Fal

Shoulder 

treatments 

Shoulder 

treatments -

other

6.34 

Miles

1032399.

74

1032399.

74

Penalty 

Transfer 

- Section 

154

Rural 

Major 

Collector

646 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-60 (Wire 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

2.88 

Miles

558196.0

3

558196.0

3

Penalty 

Transfer 

- Section 

154

3500 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

2015 Rumble 

Stripes 

District 4

Roadway 

Rumble 

strips - edge 

or shoulder

265.02 

Miles

3110895.

27

3110895.

27

Penalty 

Transfer 

- Section 

154

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 3

Roadway 

Rumble 

strips - edge 

or shoulder

127.37 

Miles

1140248.

05

1140248.

05

Penalty 

Transfer 

- Section 

154

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 2

Roadway 

Rumble 

strips - edge 

or shoulder

197.75 

Miles

3411662.

78

3411662.

78

Penalty 

Transfer 

- Section 

154

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

S-146 

Widening

Shoulder 

treatments 

Shoulder 

treatments -

1 Miles 18000 20000 HRRRP 

(SAFETE

A-LU)

Rural Local 

Road or 

Street

1680 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 
2016 South Carolina Highway Safety Improvement Program

14

other shoulders 

to pro

S-272 SAFETY 

IMPROVEME

NT

Shoulder 

treatments 

Shoulder 

treatments -

other

4.06 

Miles

8506.95 9452.17 HRRRP 

(SAFETE

A-LU)

Rural 

Major 

Collector

1400 0 State 

Highway 

Agency

Roadway 

Departure

S- 24 

WIDENING

Shoulder 

treatments 

Shoulder 

treatments -

other

2.15 

Miles

4500 5000 HRRRP 

(SAFETE

A-LU)

Rural 

Major 

Collector

700 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

SC 462 

WIDENING 

RESURFACE

Shoulder 

treatments 

Shoulder 

treatments -

other

35.7 

Miles

194221.8

6

174799.6

3

HRRRP 

(SAFETE

A-LU)

Rural 

Minor 

Arterial

3226 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-112 (N. 

Ebenezer 

Rd/Pisgah Rd) 

at S-193 (N. 

Eben

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

180000 200000 HSIP 

(Section 

148)

Urban 

Minor 

Collector

1425

0

0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

D2 Low Cost 

Safety 

Improvement

s

Intersection 

traffic 

control 

Systemic 

improveme

nts - signalcontrolled

1 

Numbe

rs

97187.97 97187.97 HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Intersectio

ns

D3 Low Cost Intersection 1 380537.8 380537.8 HSIP 0 0 State Intersectio
2016 South Carolina Highway Safety Improvement Program

15

Safety 

Improvement

s

traffic 

control 

Systemic 

improveme

nts - signalcontrolled

Numbe

rs

1 1 (Section 

148)

Highway 

Agency

ns

Signalize and 

construct left 

turn lanes on 

S-204 (

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

81000 90000 HSIP 

(Section 

148)

Urban 

Minor 

Collector

1595

0

0 State 

Highway 

Agency

Intersectio

ns

Median 

Improvement

s (US 21 @ SC 

170; SC 170 @ 

S-76

Access 

managemen

t Median 

crossover -

unspecified

1 

Numbe

rs

45000 50000 HSIP 

(Section 

148)

Urban 

Principal 

Arterial -

Other

2190

0

0 State 

Highway 

Agency

Intersectio

ns

2015 HFSC 

Project

Roadway 

Pavement 

surface -

high friction 

surface

1 

Numbe

rs

150306.2

6

167006.9

5

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Richland I-77 

Feasibility 

Study

Noninfrastructur

e 

Transportati

on safety 

planning

1 

Numbe

rs

45000 50000 HSIP 

(Section 

148)

Rural 

Principal 

Arterial -

Interstate

0 0 State 

Highway 

Agency

Corridor 

Study

SC 153 

Feasibility 

Study

Noninfrastructur

e 

Transportati

on safety 

1 

Numbe

rs

45000 50000 HSIP 

(Section 

148)

Urban 

Minor 

Arterial

0 0 State 

Highway 

Agency

Corridor 

Study
2016 South Carolina Highway Safety Improvement Program

16

planning

S-29 

(Riverside Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

10.01 

Miles

4224941.

63

4694379.

59

HSIP 

(Section 

148)

Rural 

Major 

Collector

3300 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-347 (John 

Everall Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

3.05 

Miles

761922.7 846580.7

7

HSIP 

(Section 

148)

Rural 

Major 

Collector

1100 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

Statewide 

Section/Corri

dor 

Improvement

s - S-187 (B

Shoulder 

treatments 

Shoulder 

treatments -

other

3.47 

Miles

1032865.

58

1147628.

42

HSIP 

(Section 

148)

Rural 

Major 

Collector

750 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-196 

(Harrison 

Grove Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

3.31 

Miles

1114302.

75

1238114.

17

HSIP 

(Section 

148)

Rural Local 

Road or 

Street

2040 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-105 (Mayo 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

3.76 

Miles

691408.0

8

768231.2 HSIP 

(Section 

148)

Rural 

Major 

Collector

850 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

SC 418 

(Fountain Inn 

Shoulder 

treatments 

3.34 

Miles

691649.2

6

768499.1

8

HSIP 

(Section 

Rural 

Major 

750 0 State 

Highway 

Roadway 

Departure

Identify 

opportuniti
2016 South Carolina Highway Safety Improvement Program

17

Rd) Shoulder 

treatments -

other

148) Collector Agency es to 

upgrade 

shoulders 

to pro

Statewide 

Section/Corri

dor 

Improvement

s - Moorefie

Shoulder 

treatments 

Shoulder 

treatments -

other

16.34 

Miles

3186967.

47

3541074.

97

HSIP 

(Section 

148)

Rural 

Major 

Collector

2800 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

SC 186 

(Dacusville 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

4.36 

Miles

308318.3

8

342575.9

8

HSIP 

(Section 

148)

Rural 

Major 

Collector

1100 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-25 (Old 

Manning Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

5.57 

Miles

737069.6

9

737069.6

9

HSIP 

(Section 

148)

Rural 

Major 

Collector

2700 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-458 (Cains 

Mill Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

4.4 

Miles

548272.3

1

548272.3

1

HSIP 

(Section 

148)

Rural 

Major 

Collector

2800 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-528 (Kolb 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

2.44 

Miles

602919.4

6

602919.4

6

HSIP 

(Section 

148)

Urban 

Major 

Collector

2100 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro
2016 South Carolina Highway Safety Improvement Program

18

S-1058 

(Kirkwood Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

1.23 

Miles

337300.5

4

374778.3

8

HSIP 

(Section 

148)

Urban 

Local Road 

or Street

638 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-955 (Kelly 

Mill Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

3.87 

Miles

212729.3

5

236365.9

4

HSIP 

(Section 

148)

Urban 

Major 

Collector

3178 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

Statewide 

Section/Corri

dor 

Improvement

s - S-51 (Am

Shoulder 

treatments 

Shoulder 

treatments -

other

6.48 

Miles

288971.3

3

321079.2

5

HSIP 

(Section 

148)

Rural 

Major 

Collector

6980 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-647 (Gator 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

2.64 

Miles

202136.1

1

224595.6

8

HSIP 

(Section 

148)

Urban 

Major 

Collector

1680 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-415 (Church 

St)

Shoulder 

treatments 

Shoulder 

treatments -

other

1.71 

Miles

73879.23 82088.03 HSIP 

(Section 

148)

Urban 

Local Road 

or Street

1500 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-47 (White 

Pond Road/ 

Porter Cross 

Road

Shoulder 

treatments 

Shoulder 

treatments -

3.9 

Miles

686580.7

1

762867.4

5

HSIP 

(Section 

148)

Rural 

Major 

Collector

687 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 
2016 South Carolina Highway Safety Improvement Program

19

other shoulders 

to pro

S-485 (Three 

and Twenty 

Rd/ St Paul 

Rd)

Shoulder 

treatments 

Shoulder 

treatments -

other

6.34 

Miles

1743991.

05

1937767.

84

HSIP 

(Section 

148)

Rural 

Major 

Collector

1500 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

S-63 (Alpine 

Rd) & S-1026 

(Old Percival 

Rd)

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

70195.79 77995.32 HSIP 

(Section 

148)

Urban 

Minor 

Arterial

1461

3

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 9 at Foster 

Rd

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

45000 50000 HSIP 

(Section 

148)

Rural 

Minor 

Collector

8400 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

US 76 @ S618Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

24120 26800 HSIP 

(Section 

148)

Urban 

Major 

Collector

2295

0

0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

SC 6 @ S-627 Intersection 

geometry 

Auxiliary 

lanes - add 

1 

Numbe

rs

67500 75000 HSIP 

(Section 

148)

Rural 

Major 

Collector

0 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 
2016 South Carolina Highway Safety Improvement Program

20

left-turn 

lane

evaluate 

for

2015 Rumble 

Stripes 

District 7

Roadway 

Rumble 

strips - edge 

or shoulder

191.79 

Miles

715492.9

6

715492.9

6

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 6

Roadway 

Rumble 

strips - edge 

or shoulder

128.37 

Miles

2983416.

56

2983416.

56

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 5

Roadway 

Rumble 

strips - edge 

or shoulder

128.17 

Miles

460684.8

3

460684.8

3

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 4

Roadway 

Rumble 

strips - edge 

or shoulder

265.02 

Miles

3367966.

56

3367966.

56

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble 

Stripes 

District 3

Roadway 

Rumble 

strips - edge 

or shoulder

127.37 

Miles

876017.7

5

876017.7

5

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Deploy 

centerline 

and edge 

line 

rumbles in 

accorda

2015 Rumble Roadway 216.86 520773.6 520773.6 HSIP 0 0 State Roadway Deploy 
2016 South Carolina Highway Safety Improvement Program

21

Stripes 

District 1

Rumble 

strips - edge 

or shoulder

Miles 8 8 (Section 

148)

Highway 

Agency

Departure centerline 

and edge 

line 

rumbles in 

accorda

SC9/S-664 Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

729260.0

4

810288.9

3

HSIP 

(Section 

148)

Rural 

Principal 

Arterial -

Other

5150 0 State 

Highway 

Agency

Intersectio

ns

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

SC 9/ Flag 

Patch Road

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

784894.2

9

872104.7

6

HSIP 

(Section 

148)

Rural 

Principal 

Arterial -

Other

5550 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 34 Safety 

Section 

Widening 

Project

Shoulder 

treatments 

Shoulder 

treatments -

other

1 

Numbe

rs

80658.96 89621.06 HSIP 

(Section 

148)

Rural 

Minor 

Arterial

4900 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

I-20 (US 378 

to Long Pond 

Road)

Roadway 

Roadway 

widening -

add lane(s) 

along 

segment

11.1 

Miles

450000 500000 HSIP 

(Section 

148)

Urban 

Principal 

Arterial -

Interstate

5366

5

0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

US 21 @ S499Intersection 

geometry 

Intersection 

geometrics -

modify skew 

1 

Numbe

rs

1108228.

73

1231365.

26

HSIP 

(Section 

148)

Rural 

Major 

Collector

5400 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 
2016 South Carolina Highway Safety Improvement Program

22

angle for

SC 261 OTHER Access 

managemen

t Raised 

island -

install new

1 

Numbe

rs

176154.0

1

195726.6

7

HSIP 

(Section 

148)

Rural 

Minor 

Collector

5420 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

S-25/S-522 

Intersection 

Improvement

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

242989.6

9

242989.6

9

HSIP 

(Section 

148)

Urban 

Major 

Collector

9400 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

S-82 

INTERSEC. 

IMPROVEME

NT

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

45000 45000 HSIP 

(Section 

148)

Urban 

Major 

Collector

1054

4

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

US 501 

INTERSEC. 

IMPROVEME

NT

Intersection 

geometry 

Auxiliary 

lanes -

modify leftturn lane 

offset

1 

Numbe

rs

552591.1

2

613990.1

4

HSIP 

(Section 

148)

Urban 

Principal 

Arterial -

Other

2305

0

0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

Rumble 

Stripes - Dist. 

2 2014

Roadway 

Rumble 

strips - edge 

311.03 

Miles

2926710.

8

2926710.

8

HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 
2016 South Carolina Highway Safety Improvement Program

23

or shoulder upgrade 

shoulders 

to pro

Rumble 

Stripes - Dist. 

1 2014

Roadway 

Rumble 

strips - edge 

or shoulder

79.28 

Miles

986899.2 986899.2 HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Roadway 

Departure

Identify 

opportuniti

es to 

upgrade 

shoulders 

to pro

SC 101 @ S135 

INTERSEC. 

IMPROVEME

NTS

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

124000 124000 HSIP 

(Section 

148)

Urban 

Major 

Collector

6850 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 146 @ SC 

417

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

172700 172700 HSIP 

(Section 

148)

Urban 

Minor 

Collector

2060

0

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 146 @ SC 

417

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

54000 54000 HSIP 

(Section 

148)

0 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 9 @ S-420 Intersection 

geometry 

1 

Numbe

832805.6 925339.5

5

HSIP 

(Section 

Rural 

Principal 

6000 0 State 

Highway 

Intersectio

ns

Utilize 

innovative 
2016 South Carolina Highway Safety Improvement Program

24

Intersection 

geometry -

other

rs 148) Arterial -

Other

Agency design 

techniques

, such as 

roun

S- 70 

INTERSEC. 

IMPROVEME

NTS

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

687481.4

3

763868.2

5

HSIP 

(Section 

148)

Urban 

Major 

Collector

9800 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

S-106/S387/S-1065Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

1128478.

72

1128478.

72

HSIP 

(Section 

148)

Urban 

Major 

Collector

1005

7

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

US 21/S-52 

Intersection 

Improvement

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

385548.6

9

428387.4

3

HSIP 

(Section 

148)

Urban 

Minor 

Arterial

1490

0

0 State 

Highway 

Agency

Intersectio

ns

(1)Install 

LED 

signalized 

heads and 

reflective 

bac

SC 38 

INTERSEC. 

IMPROVEME

NTS

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

303943.7

3

303943.7

3

HSIP 

(Section 

148)

Urban 

Minor 

Arterial

7100 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun
2016 South Carolina Highway Safety Improvement Program

25

SC 6/S-624 

INTERSEC. 

IMPROVEME

NTS

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

388803.6

7

432004.0

7

HSIP 

(Section 

148)

Rural 

Major 

Collector

6750 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

SC 118/S-105 

INTERSEC. 

IMPROVEME

NTS

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn 

lane

1 

Numbe

rs

259472.2

4

288302.4

9

HSIP 

(Section 

148)

Urban 

Principal 

Arterial -

Other

9450 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

SC 24 @ SC 59 Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

1200084.

23

1333426.

93

HSIP 

(Section 

148)

Rural 

Minor 

Arterial

7500 0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

S-87 at S-488 Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

255841.0

6

255841.0

6

HSIP 

(Section 

148)

Rural 

Minor 

Arterial

7570 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

S- 65/S663/S-1471Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

1431536.

66

1431536.

66

HSIP 

(Section 

148)

Rural 

Major 

Collector

2532 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun
2016 South Carolina Highway Safety Improvement Program

26

I- 85 

INTERSEC. 

IMPROVEME

NT

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

0 207396.7

3

230440.8

1

HSIP 

(Section 

148)

Rural 

Principal 

Arterial -

Interstate

2867

5

0 State 

Highway 

Agency

Intersectio

ns

Identify 

high-crash 

intersectio

ns and 

evaluate 

for

I-26 at US 601 Interchange 

design 

Interchange 

design -

other

0.5 

Miles

870572.9

4

967303.2

6

HSIP 

(Section 

148)

Rural 

Principal 

Arterial -

Interstate

5100

0

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 38 at S-329 Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

1601852.

46

1601852.

46

HSIP 

(Section 

148)

Urban 

Minor 

Arterial

6188 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

SC 151 Bus @ 

S-10, S-102, & 

S-1040 

Intersection 

Im

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

173700 173700 HSIP 

(Section 

148)

Urban 

Minor 

Arterial

1450

0

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

S-28 (Camp 

Rd) With S-53 

(Riverland)

Intersection 

traffic 

control 

Intersection 

traffic 

control -

1 

Numbe

rs

52400 52400 HSIP 

(Section 

148)

Urban 

Major 

Collector

9850 0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun
2016 South Carolina Highway Safety Improvement Program

27

other

S-529 at S1216Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

98771.7 109746.3

3

HSIP 

(Section 

148)

Urban 

Principal 

Arterial -

Other

1472

5

0 State 

Highway 

Agency

Intersectio

ns

(1)Install 

LED 

signalized 

heads and 

reflective 

bac

Singleton 

Ridge Road at 

Technology 

Park - Conway

Intersection 

traffic 

control 

Modify 

control -

two-way 

stop to 

roundabout

1 

Numbe

rs

126000 140000 HSIP 

(Section 

148)

Urban 

Minor 

Arterial

1030

0

0 State 

Highway 

Agency

Intersectio

ns

Utilize 

innovative 

design 

techniques

, such as 

roun

S- 30 

INTERSEC. 

IMPROVEME

NT

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

168135.3

8

186817.0

9

HSIP 

(Section 

148)

Urban 

Major 

Collector

1020

0

0 State 

Highway 

Agency

Intersectio

ns

(1)Install 

LED 

signalized 

heads and 

reflective 

bac
2016 South Carolina Highway Safety Improvement Program

28

Progress in Achieving Safety Performance Targets

Overview of General Safety Trends

Present data showing the general highway safety trends in the state for the past five years. 

Performance Measures* 2011 2012 2013 2014 2015

Number of fatalities 905.4 862.6 831.2 816.8 851

Number of serious injuries 3551 3408.6 3359.6 3307 3229.8

Fatality rate (per HMVMT) 1.84 1.76 1.7 1.66 1.71

Serious injury rate (per HMVMT) 7.21 6.97 6.87 6.73 6.51

*Performance measure data is presented using a five-year rolling average.
2016 South Carolina Highway Safety Improvement Program

29
2016 South Carolina Highway Safety Improvement Program

30

Present data showing the general highway safety trends in the state for the past five years. 

Performance Measures* 3551 3408.6 3359.6 3307 3229.8

Number of fatalities

Number of serious injuries

Fatality rate (per HMVMT)

Serious injury rate (per HMVMT)

*Performance measure data is presented using a five-year rolling average.
2016 South Carolina Highway Safety Improvement Program

31

To the maximum extent possible, present performance measure* data by functional classification and ownership. 

Year - 2015

Function Classification Number of fatalities Number of serious injuries Fatality rate (per HMVMT) Serious injury rate (per HMVMT)

RURAL PRINCIPAL 

ARTERIAL - INTERSTATE

64.8 125.8 0.86 1.67

RURAL PRINCIPAL 

ARTERIAL - OTHER 

FREEWAYS AND 

EXPRESSWAYS

2.8 2.4 0.7 0.26

RURAL PRINCIPAL 

ARTERIAL - OTHER

73.2 197 1.8 4.81

RURAL MINOR 

ARTERIAL

94 261 2.35 6.48

RURAL MINOR 

COLLECTOR

14.8 39.2 5.53 14.56

RURAL MAJOR 

COLLECTOR

171.8 442.6 3.7 9.5

RURAL LOCAL ROAD OR 

STREET

73.2 231.8 2.85 9.08

URBAN PRINCIPAL 

ARTERIAL - INTERSTATE

36.6 112.2 0.56 1.73
2016 South Carolina Highway Safety Improvement Program

32

URBAN PRINCIPAL 

ARTERIAL - OTHER 

FREEWAYS AND 

EXPRESSWAYS

7.6 26.6 1 3.46

URBAN PRINCIPAL 

ARTERIAL - OTHER

117 535.2 1.58 7.24

URBAN MINOR 

ARTERIAL

81 405.4 1.35 6.74

URBAN MINOR 

COLLECTOR

0.2 0.4 0.63 1.27

URBAN MAJOR 

COLLECTOR

59.2 256.4 1.68 7.26

URBAN LOCAL ROAD 

OR STREET

41.6 184.4 1.99 8.84

UNKNOWN 13.2 409.4
2016 South Carolina Highway Safety Improvement Program

33
2016 South Carolina Highway Safety Improvement Program

34
2016 South Carolina Highway Safety Improvement Program

35
2016 South Carolina Highway Safety Improvement Program

36
2016 South Carolina Highway Safety Improvement Program

37

Year - 2015

Roadway Ownership Number of fatalities Number of serious injuries Fatality rate (per HMVMT) Serious injury rate (per HMVMT)

STATE HIGHWAY AGENCY 805.6 2976.2 1.69 6.25

STATE HIGHWAY AGENCY 805.6

OTHER 45.4 253.6 2.39 13.36

OTHER 45.4 253.6 2.39 13.36
2016 South Carolina Highway Safety Improvement Program

38
2016 South Carolina Highway Safety Improvement Program

39
2016 South Carolina Highway Safety Improvement Program

40
2016 South Carolina Highway Safety Improvement Program

41
2016 South Carolina Highway Safety Improvement Program

42
2016 South Carolina Highway Safety Improvement Program

43

Describe any other aspects of the general highway safety trends on which you would like to elaborate.

None.

Application of Special Rules

Present the rate of traffic fatalities and serious injuries per capita for drivers and pedestrians over the 

age of 65. 

Older Driver

Performance Measures

2010 2011 2012 2013 2014

Fatality rate (per capita) 0.09 0.12 0.14 0.13 0.13

Serious injury rate (per 

capita)

0.19 0.25 0.32 0.33 0.32

Fatality and serious injury 

rate (per capita)

0.27 0.37 0.46 0.46 0.45

*Performance measure data is presented using a five-year rolling average.

The number of fatalities for drivers and pedestrians age 65 and older was obtained from the 

Fatality Analysis Reporting System (FARS). The number of serious injuries for drivers and 

pedestrians age 65 and older was obtained from South Carolina’s data system. The population 

figures were obtained from the MAP-21 Older Drivers and Pedestrians Special Rule Final 

Guidance. The rate was obtained by taking the number of fatalities (or serious injuries or 

serious injuries and fatalities) and dividing by the population figure. For example, the fatality 

rate for 2014 was obtained by dividing 98 by 762 to get 0.13.

Yearly data for 2006 and 2007 are not available; therefore, the 5-year averages calculated for 

2010 and 2011 are incorrect.
2016 South Carolina Highway Safety Improvement Program

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Does the older driver special rule apply to your state? 

No

Assessment of the Effectiveness of the Improvements (Program 

Evaluation)
2016 South Carolina Highway Safety Improvement Program

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What indicators of success can you use to demonstrate effectiveness and success in the Highway 

Safety Improvement Program?

Benefit/cost

If 'benefit/cost', indicate the overall Highway Safety Improvement Program benefit/cost ratio.

3.95

What significant programmatic changes have occurred since the last reporting period? 

None

Briefly describe significant program changes that have occurred since the last reporting period. 

None.
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SHSP Emphasis Areas

For each SHSP emphasis area that relates to the HSIP, present trends in emphasis area performance measures. 

Year - 2015

HSIP-related SHSP 

Emphasis Areas

Target 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3

Roadway Departure 412.8 1290 0.83 2.6

Intersections 167.4 936.4 0.34 1.89

Pedestrians 115.6 192.2 0.23 0.39

Bicyclists 15 59.8 0.03 0.12

Older Drivers 136 465.8 0.27 0.94

Motorcyclists 114.2 424 0.23 0.86

Work Zones 11.6 33.6 0.02 0.07
2016 South Carolina Highway Safety Improvement Program

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2016 South Carolina Highway Safety Improvement Program

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2016 South Carolina Highway Safety Improvement Program

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2016 South Carolina Highway Safety Improvement Program

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Groups of similar project types
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Present the overall effectiveness of groups of similar types of projects.

Systemic Treatments

Present the overall effectiveness of systemic treatments.

Year - 2015

HSIP Subprogram TypesTarget 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3

Year - 2015

Systemic 

improvement

Target 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3
2016 South Carolina Highway Safety Improvement Program

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2016 South Carolina Highway Safety Improvement Program

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Describe any other aspects of the overall Highway Safety Improvement Program effectiveness on 

which you would like to elaborate. 

None.
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Project Evaluation

Provide project evaluation data for completed projects (optional). 

Location Functional 

Class

Improvement 

Category

Improvement 

Type

BefFatalBefSerious 

Injury

Bef-All 

Injuries

BefPDOBefTotalAftFatalAftSerious 

Injury

Aft-All 

Injuries

AftPDOAftTotalEvaluation 

Results 

(Benefit/ 

Cost Ratio)

SC 118 @ S-895 Principal 

Arterial -

Other

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

15 15 30 1 3 4 3.76

SC 116 (Laurel 

Bay Road) @ S86 (Shanklin 

Road)

Urban 

Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

4 9 13 1 3 8 12 -1.19
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S-40 (Joe 

Frazier Road) 

@ S-263 

(Morall Drive/ 

Pine Grove 

Road)

Urban 

Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

7 10 17 1 2 3 2.63

S-63 (Raccoon 

Road) @ S-79 

(Silver Road)

Rural Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

1 10 13 24 1 5 6 2.85

US 15 @ S-13 Rural Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

8 6 14 3.68

S-13 (Central 

Ave) @ S-58 

(W. Butternut 

Rd)

Urban 

Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

3 6 19 28 3 15 18 1.89
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S-62 

(Wachesaw 

Road) @ S391/S-878 (Old 

Kings Hwy)

Urban 

Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

3 5 8 1 2 3 0.61

S-50 (Fork 

Shoals Road) 

@ S-221 

(Conestee 

Road)

Urban 

Major 

Collector

Intersection 

traffic control

Intersection 

traffic control -

other

4 14 18 1 2 4 7 0.53

S-166 (Brushy 

Creek Road) @ 

S-347 (Hudson 

Road)

Urban 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

9 65 74 2 18 20 1.79

S-31 (Red Bluff 

Road) @ S-568 

(Heritage 

Road)

Rural Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

realignment to 

increase cross 

street offset

4 9 13 1 1 2 0.9
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SC 336 (Old 

House Road) @ 

SC 462 

(Lowcountry 

Drive)

Rural Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

1 3 16 20 4 6 10 1.94

SC 160 @ S-42 Rural 

Principal 

Arterial -

Other

Intersection 

traffic control

Systemic 

improvements -

signal-controlled

6 22 28 2 21 23 0.31

SC 6 @ S-73 

(Fish Hatchery 

Road)

Rural Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

1 3 15 14 33 4 6 10 29.77

S-34 (Platt 

Springs Rd) @ 

S-1910 (McLee 

Rd) & S-1848 

(Kyzer Rd)

Rural Major 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

1 5 18 24 2 16 18 0.77
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S-77 (Two 

Notch Rd) @ S278 (Calks 

Ferry Rd)

Rural Major 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

4 7 11 1 1 0.65

SC 302 

(Edmund Hwy) 

@ S-625 (Old 

Charleston Rd)

Rural Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

1 1 9 16 27 3 3 20.68

S-70 (Two 

Notch Road) @ 

S-921 (Laurel 

Road)

Urban 

Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

1 1 15 19 36 1 4 5 23.83

SC 45 

(Branchdale 

Highway) @ SC 

310 (Camden 

Road)

Rural Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

1 11 5 17 6 6 3.73
2016 South Carolina Highway Safety Improvement Program

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S-83 @ S-1050 Rural Minor 

Arterial

Roadway Roadway 

widening - add 

lane(s) along 

segment

1 13 67 81 14 76 90 -3.04

SC 120 

(Pinewood Rd) 

@ S-251 

(Starks Ferry 

Rd)

Rural Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

7 4 11 1 3 4 1.13

US 521 

(Camden Hwy) 

@ US 76 

Business 

(Broad St)

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Auxiliary lanes -

add left-turn lane

3 15 39 57 7 16 23 5.18

S-64 (Lincoln 

Road) @ S-172 

(Old Limestone 

Road)

Rural Major 

Collector

Intersection 

traffic control

Modify control -

two-way stop to 

roundabout

4 10 14 2 2 1.59
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S-77 (MP 15.7-

16)

Rural Major 

Collector

Roadway Rumble strips -

edge or shoulder

1 2 3 6 1 1 7.98

S-65 (MP 0-

6.75)

Rural Major 

Collector

Roadway Rumble strips -

edge or shoulder

2 2 29 62 95 1 2 32 59 94 -20.22

I-85 (MP 95.3-

96.3)

Rural 

Principal 

Arteria -

Interstate

Roadway Pavement 

surface - high 

friction surface

1 3 6 52 62 11 34 45 6.95

I-26 (MP 75.5-

76.5; MP 81.5-

83.1; MP 85.2-

85.7)

Rural 

Principal 

Arteria -

Interstate

Roadway Pavement 

surface - high 

friction surface

1 7 43 221 272 1 27 109 137 3.94
2016 South Carolina Highway Safety Improvement Program

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2016 South Carolina Highway Safety Improvement Program

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Optional Attachments

Sections Files Attached
2016 South Carolina Highway Safety Improvement Program

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Glossary

5 year rolling average means the average of five individual, 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.