October 1, 2020 

1200 New Jersey Ave., SE 

Washington, D.C. 20590 

In Reply Refer To: 

HSST-1/WZ-396 

Mr. Eric Willetts 

MDI Worldwide 

38271 W. Twelve Mile Road 

Farmington Hills, MI 48331 

USA 

Dear Mr. Willetts: 

This letter is in response to your December 2, 2019 request for the Federal Highway 

Administration (FHWA) to review a roadside safety device, hardware, or system for eligibility for 

reimbursement under the Federal-aid highway program. This FHWA letter of eligibility is 

assigned FHWA control number WZ-396 and is valid until a subsequent letter is issued by 

FHWA that expressly references this device. 

Decision 

The following device is eligible within the length-of-need, with details provided in the form 

which is attached as an integral part of this letter: 

• 4814M-DLK 

Scope of this Letter 

To be found eligible for Federal-aid funding, new roadside safety devices should meet the crash 

test and evaluation criteria contained in the American Association of State Highway and 

Transportation Officials’(AASHTO) Manual for Assessing Safety Hardware (MASH). 

However, the FHWA, the Department of Transportation, and the United States Government do 

not regulate the manufacture of roadside safety devices. Eligibility for reimbursement under the 

Federal-aid highway program does not establish approval, certification or endorsement of the 

device for any particular purpose or use. 

This letter is not a determination by the FHWA, the Department of Transportation, or the United 

States Government that a vehicle crash involving the device will result in any particular 

outcome, nor is it a guarantee of the in-service performance of this device. Proper 

manufacturing, installation, and maintenance are required in order for this device to function as 

tested. 

This finding of eligibility is limited to the crashworthiness of the system and does not cover other 

structural features, nor conformity with the Manual on Uniform Traffic Control Devices. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 

Eligibility for Reimbursement 

Based solely on a review of crash test results and certifications submitted by the manufacturer, 

and the crash test laboratory, FHWA agrees that the device described herein meets the crash test 

and evaluation criteria of the AASHTO’s MASH. Therefore, the device is eligible for

reimbursement under the Federal-aid highway program if installed under the range of tested 

conditions. 

Name of system: 4814M-DLK 

Type of system: work-zone traffic control device 

Test Level: MASH Test Level 3 (TL3) 

Testing conducted by: Applus IDIADA KARCO Engineering, LLC. 

Date of request: December 2, 2019 

FHWA concurs with the recommendation of the accredited crash testing laboratory on the 

attached form. 

Full Description of the Eligible Device 

The device and supporting documentation, including reports of the crash tests or other testing 

done, videos of any crash testing, and/or drawings of the device, are described in the attached 

form. 

Notice 

This eligibility letter is issued for the subject device as tested. Modifications made to the device 

are not covered by this letter. Any modifications to this device should be submitted to the user 

(i.e., state DOT) as per their requirements. 

You are expected to supply potential users with sufficient information on design, installation and 

maintenance requirements to ensure proper performance. 

You are expected to certify to potential users that the hardware furnished has the same chemistry, 

mechanical properties, and geometry as that submitted for review, and that it will meet the test 

and evaluation criteria of AASHTO’s MASH.

Issuance of this letter does not convey property rights of any sort or any exclusive privilege. This 

letter is based on the premise that information and reports submitted by you are accurate and 

correct. We reserve the right to modify or revoke this letter if: (1) there are any inaccuracies in 

the information submitted in support of your request for this letter, (2) the qualification testing 

was flawed, (3) in-service performance or other information reveals safety problems, (4) the 

system is significantly different from the version that was crash tested, or (5) any other 

information indicates that the letter was issued in error or otherwise does not reflect full and 

complete information about the crashworthiness of the system. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 

Standard Provisions 

• To prevent misunderstanding by others, this letter of eligibility designated as FHWA 

control number WZ-396 shall not be reproduced except in full. This letter and the test 

documentation upon which it is based are public information. All such letters and 

documentation may be reviewed upon request. 

• This letter shall not be construed as authorization or consent by the FHWA to use, 

manufacture, or sell any patented system for which the applicant is not the patent holder. 

• This FHWA eligibility letter is not an expression of any Agency view, position, or 

determination of validity, scope, or ownership of any intellectual property rights to a 

specific device or design. Further, this letter does not impute any distribution or licensing 

rights to the requester. This FHWA eligibility letter determination is made based solely 

on the crash-testing information submitted by the requester. The FHWA reserves the 

right to review and revoke an earlier eligibility determination after receipt of subsequent 

information related to crash testing. 

Sincerely, 

Michael S. Griffith 

Director, Office of Safety Technologies 

Office of Safety 

Enclosures 
Version 10.0 (05/16) 

Page 1 of 4 

Request for Federal Aid Reimbursement Eligibility 

of Highway Safety Hardware 

Date of Request: December 2, 2019 New Resubmission 

Name: Eric Willetts 

Company: MDI Worldwide 

Address: 38271 W. Twelve Mile Road, Farmington Hills, MI 48331 

Country: United States 

To: Michael S. Griffith, Director 

FHWA, Office of Safety Technologies 

I request the following devices be considered eligible for reimbursement under the Federal-aid 

highway program. 

Device & Testing Criterion - Enter from right to left starting with Test L

System Type Submission Type Device Name / Variant Testing Criterion Test 

Level 

'WZ':CrashWorthyWorkZon PhysicalCrashTesting 

Engineering Analysis 

4814M-DLK 

AASHTO MASH TL3 

! - ! - !

 

 

itter 

m

b

u

S

 

Same asSubmitter

evel ! - ! - ! 

By submitting this request for review and evaluation by the Federal Highway Administration, I certify 

that the product(s) was (were) tested in conformity with the AASHTO Manual for Assessing Safety 

Hardware and that the evaluation results meet the appropriate evaluation criteria in the MASH. 

Individual or Organization responsible for the product: 

Contact Name: Eric Willetts Same asSubmitter

Company Name: MDI Worldwide Same asSubmitter

Address: 38271 W. Twelve Mile Road, Farmington Hills, MI 48331 

Country: United States Same asSubmitter

Enter below all disclosures of financial interests as required by the FHWA `Federal-Aid Reimbursement 

Eligibility Process for Safety Hardware Devices' document. 

Marketing Displays, Inc., doing business as MDI Worldwide (“MDI”), whose principal place of business is 38271 

WestTwelveMileRoad,Farmington Hills,Michigan 48331-3041,and ApplusIDIADAKARCOEngineering,LLC., 

whose principal place of businessis9270HollyRoad,Adelanto,CA92301share no ($0.00)financial interests 

between the two organizations. Thisincludesno ($0.00)financial interest but not limited to: 

i. Compensation,including wages,salaries,commissions, professional fees,or feesfor businessreferrals(dollar 

valuesare notneeded); 

ii. Consulting relationships; 

iii. Researchfunding or other formsof researchsupport; 

iv. Patents,copyrights,and other intellectual property interests; 

v. Licensesor contractual relationships; or 

vi. Businessownershipand investment interest. 
Help 

Version 10.0 (05/16) 

Page 2 of 4 

PRODUCT DESCRIPTION 

NewHardware or 

Significant Modification 

Modification to 

Existing Hardware 

Product Description of 4814M-DLK 

(Reference Drawing ZA-07921) 

The4814M-DLKtemporary sign stand isa work-zone trafficcontrol device used to display traffic control signs. 

Further Description: 

The 4814M-DLK temporary sign support isa portable/fold-up sign stand manufactured with two vertically 

mounted wind deflecting steel coil springs.Thesign stand consistsof asteel baseassembly,four aluminum 

legsand analuminum upright.The two piece telescoping legsareconstructed of 1.25”square tubeand 1.00”

square tube.A roll upsign isattached to the upright with the useof achannel and pull pin at afixed height of 

14”.

The overall height of the stand is 29”. The total weight of the stand isapproximately 22 lbs (no sign).

CRASH TESTING 

Bysignature below, theEngineeraffiliated with the testing laboratory,agreesin support of thissubmission that 

all of the critical and relevant crash tests for this device listed above were conducted to meet the MASHtest 

criteria. The Engineer has determined that no other crash testsare necessary to determine the device meets 

theMASHcriteria. 

Engineer Name: Nick V. Injev Nick Injev email=nick.injev@idiada.com,c=US Digitally signed by Nick Injev 

DN:cn=NickInjev,o=Applus IDIADAKARCO,ou, 

Date: 2019.12.31 14:00:25 -08'00' 

EngineerSignature: 

Address: 9270 Holly Road, Adelanto, CA 92301 Same asSubmitter 

Country: USA Same asSubmitter 

Help 

 

 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-70 (1100C)

Designed to evaluate the ability of asmall 

vehicle to activateany breakaway,fracture, 

or yielding mechanism. Is considered 

optional for work-zone traffic control 

devicesweighing lessthan 220 lbs(100kg). 

Theas-tested device weighed 27.7lbs(12.6 

kg) and therefore Test 70 was not 

performed. 

Non-Relevant Test, not conducted 

3-71 (1100C)

An 1100C test vehicle approached the test 

article at a nominal speed of 62 mph. The 

first 4814M-DLKsign stand impacted was 

orientedat 0°and thesecond test articleat 

90°. Upon impact the sign face on both 

devices flexed over the front of the hood, 

missing the windshield. There was no 

penetration into the test vehiclesoccupant 

compartment nor were the deformation 

limitsexceeded.The devicesdid not induce 

any vehicle instability.The4814M-DLKmet 

all the requirementsfor MASHTest 3-71. 

PASS 

A brief description of each crash test and its result: 
 

 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-72 (2270P)

A 2270P test vehicle approached the test 

article at a nominal speed of 62 mph. The 

first 4814M-DLKsign stand impacted was 

orientedat 0°and thesecondat 90°.Upon 

impact thesign faceon both devicesflexed 

over thefront of the hood and bumper. 

There was no penetration into the test 

vehicles occupant compartment nor were 

the deformation limits exceeded. The 

devices did not induce any vehicle 

instability. The 4814M-DLK met all the 

requirements for MASHTest 3-72. 

PASS 

Eric Willetts 

Version 10.0 (05/16) 

Page 3 of 4 

Full Scale Crash Testing was done in compliance with MASH by the following accredited crash test 

laboratory (cite the laboratory’s accreditation status as noted in the crash test reports.):

Laboratory Name: Applus IDIADA KARCOEngineering, LLC. Nick Injev email=nick.injev@idiada.com,c=US Digitally signed by Nick Injev 

DN:cn=NickInjev, o=ApplusIDIADAKARCO,ou, 

Date: 2019.12.31 14:00:06 -08'00' 

LaboratorySignature: 

Address: 9270 Holly Road, Adelanto, CA 92301 Same asSubmitter 

Country: USA Same asSubmitter 

Accreditation Certificate 

Number and Dates of current 

Accreditation period : 

TL-371: July 1, 2019 - July 1, 2022 

Digitally signed by Eric Willetts 

Date:2019.07.1515:06:32 

-04'00' 

SubmitterSignature*:

ATTACHMENTS 

Attach to this form: 

1) Additional disclosures of related financial interest as indicated above.

2) A copy of the full test report, video, and a Test Data Summary Sheet for each test conducted in

support of this request.

3) A drawing or drawings of the device(s) that conform to the Task Force-13 Drawing Specifications

[Hardware Guide Drawing Standards]. For proprietary products, a single isometric line drawing is

usually acceptable to illustrate the product, with detailed specifications, intended use, and contact

information provided on the reverse. Additional drawings (not in TF-13 format) showing details that

are relevant to understanding the dimensions and performance of the device should also be submitted

to facilitate our review.
 

 

Eligibility Letter 

Number Date Key Words 

Version 10.0 (05/16) 

Page 4 of 4 

FHWA Official Business Only: 
GENERAL INFORMATION Impact Conditions Occupant Risk

Test Agency.................................... Applus IDIADA KARCO . Impact Velocity Device 1........................... 62.82 mph (101.10 km/h) Longitudinal OIV.............................. N/A* .

Test No.................................... P39087-01 .... Impact Velocity Device 2........................... 61.12 mph (98.36 km/h) .. Lateral OIV.................................... N/A*

Test Designation.............................. 3-71 Device 1 Angle................................. 0.0° .. Longitudinal RA...........................N/A*

Test Date........................................ 03/26/19 Device 2 Angle................................. 90.0° Lateral RA.................................N/A*

Device 1 Kinetic Energy.............................. 316.6 kip-ft (429.2 kJ) . THIV............................................. N/A* .

TEST ARTICLE Device 2 Kinetic Energy........................ 299.7 kip-ft (406.3 kJ) .. PHD.......................................N/A*..

Name / Model....................................... 4814M-DLK with 48" x 48" Vinyl Roll-Up Sign . ASI............................................. N/A* .

Type...................................................... Work-Zone Device. Exit Conditions

Device Height .................................... 6.4 ft. (2.0 m) Device 1 Exit Velocity.................. 62.5 mph (100.6 km/h) .. Test Article Deflections

Key Elements....................................... Fiberglass, vinyl and metal Device 2 Exit Velocity..................... 60.8 mph (97.8 km/h) Debris Field (longitudinal) ....... 130.3 ft. (39.7 m)

Road Surface.................................... Concrete Vehicle Resting Position.................. 293.6 ft. (89.5 m) Downstream .. Debris Field (lateral)......... 34.2 ft. (10.4 m)

1.5 ft. (0.5 m) Left

TEST VEHICLE Vehicle Stability .................................... Satisfactory .

Type / Designation.............................. 1100C .. Maximum Roll Angle................................. N/A* Vehicle Damage

Year, Make, and Model................................. 2009 Kia Rio . Maximum Pitch Angle............N/A* . Vehicle Damage Scale..................12-FD-1 .

Curb Mass............................................. 2,335.8 lbs (1,059.5 kg) . Maximum Yaw Angle............N/A* CDC............................................. 12FDAW1

Test Inertial Mass................................. 2,399.7 lbs (1,088.5 kg) . * Not Applicable, device weighs less than 220 lbs (100 kg) Maximum Deformation........................... 0.3 in. (8 mm) at floor pan ..

Gross Static Mass.............................. 2,565.0 lbs (1,163.5 kg) ..
GENERAL INFORMATION Impact Conditions Occupant Risk

Test Agency..................................... Applus IDIADA KARCO Impact Velocity Device 1........................... 62.04 mph (99.85 km/h) Longitudinal OIV............................... N/A*

Test No........................................ P39087-02 Impact Velocity Device 2............................. 60.65 mph (97.60 km/h) Lateral OIV.................................... N/A*

Test Designation.............................. 3-72 Device 1 Angle................................... 0.0° Longitudinal RA...........................N/A*

Test Date........................................ 03/26/19 Device 2 Angle................................. 90.0° Lateral RA.................................N/A*

Device 1 Kinetic Energy............................... 645.0 kip-ft (874.5 kJ) THIV.............................................. N/A*

TEST ARTICLE Device 2 Kinetic Energy.......................... 616.2 kip-ft (835.5 kJ) PHD......................................... N/A*

Name / Model........................................ 4814M-DLK with 48” x 48” vinyl roll-up sign ASI.............................................. N/A*

Type....................................................... Work-Zone Device Exit Conditions

Device Height .................................... 6.4 ft. (2 m) Device 1 Exit Velocity.................... 61.52 mph (99.0 km/h) Test Article Deflections

Key Elements....................................... Fiberglass, vinyl and metal Device 2 Exit Velocity..................... 60.09 mph (96.7 km/h) Debris Field (longitudinal) ....... 104.9 ft. (32.0 m)

Road Surface.................................... Concrete Vehicle Resting Position.................... 288.4 ft. (87.9 m) Downstream Debris Field (lateral)......... 29.2 ft. (8.9 m)

1.7 ft. (0.5 m) Left

TEST VEHICLE Vehicle Stability ..................................... Satisfactory

Type / Designation................................ 2270p Maximum Roll Angle................................. N/A* Vehicle Damage

Year, Make, and Model.................................. 2013 Ram 1500 Maximum Pitch Angle............. N/A* Vehicle Damage Scale................... 12-FD-1

Curb Mass.............................................. 4,994.5 lbs (2,265.5 kg) Maximum Yaw Angle............N/A* CDC............................................. 12FDEW1

Test Inertial Mass.................................. 5,012.1 lbs (2,273.5 kg) * Not Applicable, device weighs less than 220 lbs (100 kg) Maximum Deformation............................. 0.3 in. (8 mm) at footwell

Gross Static Mass................................ 5,012.1 lbs (2,273.5 kg)