June 23, 2021 

Mr. Bret R. Eckert

Trinity Highway Products, LLC

3617 Cincinnati Ave., 

Rocklin, CA 95765 

Dear Mr. Eckert:

1200 New Jersey Ave., SE

Washington, D.C. 20590

In Reply Refer To: 

HSST-1/WZ-421 

This letter is in response to your July 28, 2020 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-421 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:

YODOCK 2001MB 

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: YODOCK 2001MB 

Type of system: Work Zone 

Test Level: Test Level 2 

Testing conducted by: Karco Engineering 

Date of request: July 28, 2020 

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-421 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,

Enclosures 

Michael S. Griffith

Director, Office of Safety Technologies 

Office of Safety
Version 10.0 (05/16)

 

Request for Federal Aid Reimbursement Eligibility

of Highway Safety Hardware 

Submitter

Date of Request: New Resubmission

Name:

Company:

Address:

Country:

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.

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:

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

Eligibility Process for Safety Hardware Devices' document.

Page 1 of 5 

April 29, 2021 I r-

Bret R. Eckert, P.E.

Trinity Highway Products, LLC 

36 17 Cincinnati Ave., Rocklin, CA 95765 

USA 

Device & Testing Criterion - Enter from right to left starting with Test Level I i-!-!I 

System Type Su bmi ss ion Type Device Name / Variant Testing Criterion 

Test 

Level 

'WZ': Crash Worthy Work  Physi ca l Cra sh Testing AASHTO MASH TL2

YODOCK 2001 MB 

Zone Traffic Control Devices  Engineering Analysis

Contact Name: Jonathan Pisanelli Sa me as Submitter 

Company Name: Trinity Highway Rental s Sa me as Submitter D 

Address: 900 Pa tterson Drive, Bl oomsburg, PA 17815 Sa me as Submitter 

Country: USA Sa me as Submitter IZ! 

The Yodock· 2001 MB Longitudinal Channelizer (Yodock· 200 1 MB) system t ech nology is the commercial 

embod iment of inte llectual property that is protected by patents own ed by Trinity Highway Products, LLC 

("THP"). THP does not pay royalties for sa les of the Yodock 2001 MB. The Yodock 2001 MB system was 

designed and developed by engineers and employees at Yodoc k Wall Co. The patent holders of record for the 

200 1 MB are Leo J. Yodock Ill, Leo J. Yodock Jr. and Guy C. Yodock; all of whom were employed by Yodock Wall 

Co. The associated United States patent number D596,062 (Dated July 14, 2009), is assigned to Trinity Hig hway, 

LLC. 

Appl us IDIADA Karco Engineering, LLC (KARCO) conducted the certification tests of the Yodock · 2001 MB system. 

KARCO is an internationally accredited third party crash testing laboratory. Physica l crash testing of the Yodock 

2001 MB system was performed in accordance with testing criteria, as set forth by the America n Associa t ion of 

State Highway and Transportation Officials (AASHTO) in th e Manual for Assessing Safety Ha rdware ("MASH") 

(2016). Other than fees paid to KARCO to conduct the tests and then analyze and report the test results, KARCO 

and THP do not share financial interests. The fees paid to KARCO were not dependent or contingent on the 

results of the tests. 
Version 10.0 (05/16)

PRODUCT DESCRIPTION

CRASH TESTING

Engineer Name:

Address:

Country:

A brief description of each crash test and its result:

Page 2 of 5 

 New Hardware or  Modification t

Significant Modification Existing Hardware 

The Yodock' 2001 MB Longitudinal Channelizer is a plastic, water-filled Longitudinal Channelizing Device (LCD) 

used for traffic and pedestrian channelization, road and street closures, or perimeter fencing for vertical 

construction. The Yodock' 2001 MB is not designed as a positive barrier; rat her, it is meant to provide a clear 

visual indication of the intended vehicle path through construction zones. When assembled as an LCD, the 

units are attached end-to-end using a plastic coupler and deployed with the water fill level at the bottom of 

the forklift ports. 

The Yodock' 2001 MB Longitudinal Channelizer modules are 6.0 ft. long by 18 in. wide by 32 in tall. The 

modules are manufactured from natural and orange colored high density polyethylene plastic. Orange and 

white were the as-tested colors, the product may be produced in other colors. The modules weigh 

approximately 85 lbs. empty and approximately 583 lbs. when filled to the bottom of the fork lift ports with 

water. When assembled as an LCD, the Yodock· 2001 MB modules are attached end-to-end using a plastic 

coupler. The modules incorporate fork lift access ports for maneuverability and features for vertical stacking 

during transport and storage. 

The Yodock · 2001 MB may be placed on concrete, asphalt, or other smooth level substrates. The surfaces used 

for testing were concrete and dirt. Alternate Yodock 2001 MB modules within the impact region in the 

attached test reports were tested with hazard lights. 

By signature below, the Engineer affiliated with the testing laboratory, agrees in support of this submission that 

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

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

the MASH criteria. 

Steven Matsusaka 

Engineer Signature: 

9270 Holly Road, Adelanto, CA 92301 

USA 

Same as Submitter 

Same as Submitter ~ 
Version 10.0 (05/16)

Page 3 of 5

Required Test

Number

Narrative 

Description

Evaluation

Results

2-90 (1100C)

Applus IDIADA KARCO Test No. P40090-01.

Test Date March 5, 2020. Crash Test Report

No. TR-P40090-01-NC for MASH 2016 Test

2-90 Crash Test ofTrinity Highway Products 

TL-2 Yodock® 2001MB Longitudinal 

Channelizer.

The system was impacted by a 2014 Kia Rio

4-door sedan. The test vehicle impacted the

Trinity Highway Products Yodoc k® 2001MB

Longitudinal Channelizer at a velocity of

45.79 mph (73.69 km/h) and an impact

angle of 15.6°. The vehicle penetrated the

system in a controlled fashion with a

maximum Occupant Impact Velocity (OIV)

of 18.4 ft/s (5.6 m/s) and a maximum

ridedown acceleration of -5.1 g. The

modules were damaged from module 8

through 12. The entire length of modules

were shifted from their pre-test position.

The test vehicle sustained deformation to its

front and driver side. The driver side

quarter panel was deformed and pushed

rearward. The bumper fascia was deformed.

The occupant compartment was not

penetrated and the deformation limits were

not exceeded.

The Trinity Highway Products Yodoc k® 

2001MB Longitudinal Channelizer met all of

the requirements of MASH 2016 Test 2-90.

PASS
Version 10.0 (05/16)

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:

Address:

Country:

Accreditation Certificate

Number and Dates of current

Accreditation period : 

Page 4 of 5 

Required Test Narrative Evaluation 

Number Description Results 

Applus IDIADA KARCO Test No. P40091-01. 

Test Date March 19, 2020. Crash Test Report 

No. TR-P40091-01-NC for MASH 2016 Test 

2-91 Crash Test ofTrinity Highway Products 

TL-2 Yodock 2001 MB Longitudinal 

Channelizer. 

The system was impacted by a 2014 Ram 

1500 4-door pick-up truck. The test vehicle 

impacted the Trinity Highway Products 

Yodock " 2001 MB Longitudinal Channelizer 

at a velocity of 43.95 mph (70.73 km/h) and 

an impact angle of 25.4°. The vehicle 

penetrated the system in a controlled 

2-91 (2270P) 

fashion with a maximum Occupant Impact PASS Velocity (OIV) of 14.8 ft/s (4.5 m/s) and a 

maximum ridedown acceleration of - 14.1 g 

The modules were damaged from module 9 

through 12. The entire length of modules 

were shifted from their pre-test position. 

The test vehicle sustained deformation to its 

front and driver side. Both quarter panels 

were deformed and pushed rearward. The 

bumper fascia was deformed. The occupant 

compartment was not penetrated and the 

deformation limits were not exceeded. 

The Trinity Highway Products Yodock 

2001 MB Longitudinal Channelizer met all of 

the requirements of MASH 2016 Test 2-91 

KARCO Engineering, INC 

Laboratory Signature: 

9270 Holly Road, Adelanto, CA 92301 Sarne as Submitter 

USA Same as Submitter 

International Accreditation Services (IAS) 

ISO 17025 Accreditation Certificate #TL-371 

Expires July 1, 2022 

 

 
Version 10.0 (05/16)

Attach to this form:

ATTACHMENTS

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.

FHWA Official Business Only: 

Eligibility Letter

Number Date Key Words

Page S of 5 
 

 

 

 

 
 

 

 
YODOCK 2001MB - ORANGE

D

N/

EST UNFINISHED WT: 0 lbs

Table

MATERIAL:

SEE PARTS LIST

FINISH:

DRAWN:

D. Kohfeld CHECKED:

A. Cox

DATE:

2/27/2012

DATE:

3/15/2012

TOLERANCES PER

THP-SF-001, UNLESS

OTHERWISE SPECIFIED. UNLESS OTHERWISE NOTED, ALL DIMENSIONS ARE IN INCHES.

DIMENSIONS ACCORDING TO ASME Y14.5M AND THP-SE-003

UNLESS OTHERWISE SPECIFIED. DO NOT SCALE DRAWING

YODOCK 2001MB

Revision ECO Date Rev By Chk.

DRAWING:

148002 REV: SHEET:

1 of 1

THP-FE-046 Rev F, 8/29/2018

© 2012, 2014, 2016, 2019 Trinity High

way Products, LLC. All rights reserved.

-8- . 

~,,., 

TRINITY 

HIGHWAY