1200 New Jersey Ave., SE

 Washington, D.C. 20590

1 

In Reply Refer To: 

HSST-1/CC-175

Bret R. Eckert

Trinity Highway Products, LLC 

15601 Dallas Parkway, Suite 525 

Addison, TX 75001 

USA

Dear Mr. Eckert: 

We received your correspondence of February 28, 2022 requesting issuance of a reimbursement 

eligibility letter under the Federal-aid highway program for the roadside safety system, device, 

design, product, or hardware (collectively “device”) described below. This letter is assigned 

Federal Highway Administration (FHWA) control number CC-175. 

ELIGIBILITY LETTERS

The FHWA issues Federal-aid reimbursement eligibility letters for new roadside safety devices

that are crash tested in accordance with the industry standard of the American Association of 

State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware 

(MASH). 

FHWA, the Department of Transportation, and the United States (government) do not regulate 

roadside safety devices, crash test facilities, or the manufacturing industry. Issuance of 

eligibility letters is discretionary and provided only as a service to the states. FHWA may, at its 

discretion, decline to issue, revise, or rescind an eligibility letter. Eligibility letters are only 

issued by the FHWA headquarters Office of Safety. 

Eligibility letters are issued only as notice to the states that a device is eligible for reimbursement 

under the Federal-aid highway program. They do not establish approval or certification for any 

other purpose. Issuance of an eligibility letter is not a prerequisite or requirement for state 

transportation agencies seeking to use Federal-aid funds for roadside safety devices. State 

agencies may use a device for which an eligibility letter has not been issued and seek Federal-aid 

reimbursement. 

FEDERAL-AID REIMBURSEMENT

The request for issuance of this letter certified the device was crash tested in accordance with the 

industry standard of AASHTO’s MASH. This eligibility letter is based on that certification and 

the material offered in support of its issuance. The device described below is eligible for 

reimbursement under the Federal-aid highway program. 

January 30, 2023
2 

Name of system: Median Attenuating TREND Terminal (MATT) Type 

of system: Crash Cushion 

Test Level: Test Level 3 

Testing conducted by: Applus IDIADA KARCO Engineering, LLC 

Date of request: February 28, 2022

Information about the device, including material such as the eligibility request, crash test reports, 

drawings, or images are included in one or more attachment(s) to this letter. 

Eligibility letter CC-175 is inapplicable to devices, optional equipment, alternate materials, or 

other features that were not crash tested in accordance with AASHTO’s MASH. 

This letter is issued only for the subject device as crash tested under AASHTO’s MASH. Later 

modification(s) of the device are not eligible for Federal-aid reimbursement under this letter. 

Notice of later modification(s) should be given to transportation agencies, facility owners, and 

operators (collectively “agencies”). 

Agencies should be provided appropriate information about the device’s design, installation, 

maintenance, materials, and mechanical properties. 

Issuance of this letter is discretionary, and it may be revised or rescinded at FHWA’s discretion. 

This letter is not a determination of compliance with the Manual on Uniform Traffic Control 

Devices for Streets and Highways (MUTCD) or ownership of any intellectual property rights. 

This eligibility letter is not a determination by the government that a crash involving the subject 

device will result in any particular outcome. It is limited to only the device’s eligibility for 

Federal-aid reimbursement. 

INTELLECTUAL PROPERTY

Issuance of this eligibility letter does not convey property rights of any sort nor any exclusive 

privilege. This letter is not authorization or consent by the government for the use, manufacture, 

or sale of any patented or proprietary system, device, design, product, or hardware for which the 

requester is not the patent owner. Eligibility letters are not an expression of any view, position, 

or determination by the government as to the validity, scope, or ownership of any intellectual 

property rights to a specific device. These letters do not grant, impute, suggest, or otherwise 

establish any ownership, distribution, or licensing rights to the requester. The government 

expresses no opinion about the intellectual property rights relating to any device for which this or 

any other eligibility letter is issued. 

PUBLIC DISCLOSURE

To prevent any misunderstanding, and as discussed above, this eligibility letter is assigned 

FHWA control number CC-175. It should only be reproduced in full with its attachment(s). 

This letter and the material offered by the requester supporting its issuance is public information. 

All eligibility letters and supporting material are subject to public disclosure under the Freedom 
3 

of Information Act (FOIA). Eligibility letters are available to the public at 

https://safety.fhwa.dot.gov/roadway_dept/countermeasures/reduce_crash_severity/. 

If you have any questions please contact Aimee Zhang at Aimee.Zhang@dot.gov. 

Sincerely,

Amy Jackson-Grove

Acting Director, Office of Safety 

Technologies 

Office of Safety

Enclosures 
 Version 10.0 (05/16)

Page 1 8 of

Request for Federal Aid Reimbursement Eligibility

of Highway Safety Hardware

Submitter

 Date of Request: February 28, 2022 New Resubmission

Name: Bret R. Eckert, P.E.

Company: Trinity Highway Products, LLC

Address: 15601 Dallas Parkway, Suite 525, Addison, TX 75001

Country: USA

 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 Level ! - ! - !

System Type Submission Type Device Name / Variant Testing Criterion Test 

Level

'CC': Crash Cushions, 

Attenuators, & Terminals

Physical Crash Testing

Engineering Analysis

Median Attenuating

TREND® Terminal 

(MATTTM)

AASHTO MASH TL3

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: Gregory A. Neece Same as Submitter

Company Name: Trinity Highway Products, LLC Same as Submitter

Address: 15601 Dallas Parkway, Suite 525, Addison, TX 75001 Same as Submitter

Country: USA Same as Submitter

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

Eligibility Process for Safety Hardware Devices' document.

he Median Attenuating TREND® Terminal (“MATTTM”) technology is the commercial embodiment of intellectual 

property that is owned by Trinity Highway Products, LLC ("THP"). THP does not pay royalties for sales of the 

MATTTM itself; however, royalties are paid for some specific components within the system. The MATTTM was 

designed and developed by engineers at THP. 

Applus IDIADA KARCO Engineering, LLC (“KARCO”) conducted the certification tests of the MATTTM. KARCO is an 

internationally accredited third party crash testing laboratory. Physical crash testing of the MATTTM was 

performed in accordance with testing criteria, as set forth by the American Association of State Highway and 

Transportation Officials (“AASHTO”) in the Manual for Assessing Safety Hardware ("MASH") (2016), with 2020 

Errata. 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, nor are there any royalty payments made to KARCO. The fees paid to 

KARCO were not dependent or contingent on the results of the tests.
 Version 10.0 (05/16)

Page of 2 8

PRODUCT DESCRIPTION 

New Hardware or 

Significant Modification

Modification to 

Existing Hardware

MATTTM(“Median Attenuating TREND® Terminal”) is a tangent, double-sided, redirective/gating, energyabsorbing terminal for unidirectional or bidirectional applications, to include roadside, shoulder, median, and 

gore applications. It is also suitable for use as either an approach or departure terminal. MATTTM was tested to 

MASH-2nd Edition (2016), with 2020 Errata to Test Level 3 (“TL-3”) criteria. MATTTM can be connected directly to 

8” [203 mm] blocked Midwest Guardrail System (“MGS”). No radiused or curved W-Beam guardrail is allowed 

within the System. MATTTM has a system length of 34’ 4-1/2” [10.48 m], which is measured from the center of 

Post 1 to the splice location directly behind Post 6. The impact head extends forward of the center of Post 1 by 

2’ [610 mm], for an effective length of 36’ 4-1/2” [11.09 m]. 

The System utilizes an impact head, angle strut, tension cable, one (1) Controlled Release Post (“CRP”), four (4) 

Steel Yielding Terminal Posts (“SYTP”) and one (1) standard line post and various other fastener and hardware 

components. All system posts utilize below-grade soil plates for increased soil bearing resistance. 

Additionally, the System includes six (6) SETS of Proprietary W-Beam 10/12ga guardrail panels, of which three 

(3) SETS have an integrated shaper fin and three (3) SETS do not. Posts 1-5 uses 8" [203 mm] deep steel spacers 

(Double at Post 1-2,Singles at Posts 3-5) while Post 6 utilizes 8” [203 mm] deep guardrail composite block-out

(s). System installation height, as tested, was 31” [787 mm] with a tolerance of +1” [25 mm], -0” and a width of 

29” [737 mm]. Adhesive-backed delineation was attached to the impact head. 

CRASH TESTING

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.

Engineer Name: Antonio Reyes

Engineer Signature:

Address: 9270 Holly Road, Adelanto, CA 92301 Same as Submitter

Country: USA Same as Submitter

 A brief description of each crash test and its result:

 
 Version 10.0 (05/16)

Page of 3 8

Required Test 

Number

Narrative 

Description

Evaluation 

Results

3-30 (1100C)

Applus IDIADA KARCO Test No. P41061-01. 

Test Date April 9, 2021. Crash Test Report 

No. TR-P41061-01-A for MASH 2016 Test 

3-30 Crash Test of Trinity Highway Products 

Median Attenuating TREND® Terminal 

(MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41061-01) was 

impacted by a 2015 Kia Rio 4-door sedan at 

a velocity of 63.14 mph (101.61 km/h) and a 

CIA of 0.7°. Upon impact, the terminal's 

post 1 released, post 2 yielded and partially 

uprooted as the rails translated rearward 

shearing the tabs through 1-1/2 panels. The 

vehicle yawed counter-clockwise and came 

to rest. There was no significant 

deformation or penetration into the 

vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 32.5 ft/s (9.9 m/s) 

and a maximum ridedown acceleration (RA) 

of 19.0 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-30.

PASS

3-31 (2270P)

Applus IDIADA KARCO Test No. P41062-01. 

Test Date March 25, 2021. Crash Test Report 

No. TR-P41062-01-A for MASH 2016 Test 

3-31 Crash Test of Trinity Highway Products 

Median Attenuating TREND® Terminal 

(MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41062-01) was 

impacted by a 2017 Ram 1500 pickup-truck 

at a velocity of 62.66 mph (100.84 km/h) 

and a CIA of 0.3°. Upon impact, the 

terminal's post 1 released and posts 2,3 and 

4 yielded as the slotted rails translated 

rearward absorbing the energy of the 

impact. There was no significant 

deformation or penetration into the 

vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 27.6 ft/s (8.4 m/s) 

and a maximum ridedown acceleration (RA) 

of 12.4 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-31.

PASS
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Required Test 

Number

Narrative 

Description

Evaluation 

Results

3-32 (1100C)

Applus IDIADA KARCO Test No. P41295-01. 

Test Date October 8, 2021. Crash Test 

Report No. TR-P41295-01-A for MASH 2016 

Test 3-32 Crash Test of Trinity Highway 

Products Median Attenuating TREND® 

Terminal (MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41295-01) was 

impacted by a 2015 Kia Rio 4-door sedan at 

a velocity of 62.44 mph (100.49 km/h) and a 

CIA of 4.8°. Upon impact, the terminal post 

1 released, and post 2 yielded as the rails 

translated rearward shearing the tabs 

through 1-1/2 panels. The vehicle pitched 

and yawed and came to rest. There was no 

significant deformation or penetration into 

the vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 35.4 ft/s (10.8 m/s) 

and a maximum ridedown acceleration (RA) 

of 19.0 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-32.

PASS
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3-33 (2270P)

Applus IDIADA KARCO Test No. P41064-01. 

Test Date April 20, 2021. Crash Test Report 

No. TR-P41064-01-A for MASH 2016 Test 

3-33 Crash Test of Trinity Highway Products 

Median Attenuating TREND® Terminal 

(MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41064-01) was 

impacted by a 2015 Ram 1500 pickup-truck 

at a velocity of 62.39 mph (100.41 km/h) 

and a CIA of 4.8°. Upon impact post 1 

released, post 2 and 3 yielded flat to grade 

and the slotted rails translated rearward 

dissipating the energy of the impacting 

vehicle. The truck grazed post 4 and the 

slotted rails deformed as the vehicle slows 

to a stop adjacent to the system. There was 

no significant deformation or penetration 

into the vehicle's occupant compartment. 

The vehicle experienced a maximum 

occupant impact velocity (OIV) of 25.9 ft/s 

(7.9 m/s) and a maximum ridedown 

acceleration (RA) of 10.8 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-33.

PASS
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3-34 (1100C)

Applus IDIADA KARCO Test No. P41065-01. 

Test Date March 11, 2021. Crash Test Report 

No. TR-P41065-01-NC for MASH 2016 Test 

3-34 Crash Test of Trinity Highway Products 

Median Attenuating TREND® Terminal 

(MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41065-01) was 

impacted by a 2015 Kia Rio 4-door sedan at 

a velocity of 63.99 mph (102.98 km/h) and a 

CIA of 15.2°. Upon impact, the terminal 

deflected outward, releasing the upper 

portion of post 1. The vehicle continued 

redirecting off the terminal partially yielding 

post 2 through 4. The vehicle exited the 

system at post 5 and began yawing 

clockwise until it came to rest downstream 

in a controlled manner. There was no 

significant deformation or penetration into 

the vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 16.4 ft/s (5.0 m/s) 

and a maximum ridedown acceleration (RA) 

of 15.3 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-34.

PASS

3-35 (2270P)

Applus IDIADA KARCO Test No. P41244-01. 

Test Date August 9, 2021. Crash Test Report 

No. TR-P41244-01-NC for MASH 2016 Test 

3-35 Crash Test of Trinity Highway Products 

Median Attenuating TREND® Terminal 

(MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41244-01) was 

impacted by a 2015 Ram 1500 pickup-truck 

at a velocity of 62.53 mph (100.63 km/h) 

and a CIA of 26.3°. Upon impact, the vehicle 

made contact with the rail and caused posts 

4 thru 8 to yield. The vehicle was redirected 

and came to rest in a controlled manner. 

There was no significant deformation or 

penetration into the vehicle's occupant 

compartment. The vehicle experienced a 

maximum occupant impact velocity (OIV) of 

21.7 ft/s (6.6 m/s) and a maximum ridedown 

acceleration (RA) of 14.3 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-35.

PASS

3-36 (2270P) Non-Relevant Test, not conducted
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3-37 (2270P)

Applus IDIADA KARCO Test No. P41228-01. 

Test Date July 22, 2021. Crash Test Report 

No. TR-P41228-01-A for MASH 2016 Test 

3-37b Crash Test of Trinity Highway 

Products Median Attenuating TREND® 

Terminal (MATTTM). 

The Median Attenuating TREND® Terminal 

(MATTTM) terminal (P41228-01) was 

impacted by a 2015 Kia Rio 4-door sedan at 

a velocity of 63.58 mph (102.33 km/h) and a 

CIA of 25.2°. Upon impact, post 1 released, 

post 2 yielded and the car yawed 57 

degrees before reaching its final resting 

position. The terminal caused no significant 

deformation or penetration into the 

vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 38.4 ft/s (11.7 m/s) 

and a maximum ridedown acceleration (RA) 

of 17.8 g. 

The Trinity Highway Products Median 

Attenuating TREND® Terminal (MATTTM) met 

all the requirements for MASH 2016 Test 

3-37b.

PASS

3-38 (1500A) Non-Critical, not conducted

3-40 (1100C) Non-Relevant Test, not conducted

3-41 (2270P) Non-Relevant Test, not conducted

3-42 (1100C) Non-Relevant Test, not conducted

3-43 (2270P) Non-Relevant Test, not conducted

3-44 (2270P) Non-Relevant Test, not conducted

3-45 (1500A) Non-Relevant Test, not conducted

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: KARCO Engineering, INC

Laboratory Signature:

Address: 9270 Holly Road, Adelanto, CA 92301 Same as Submitter

Country: USA Same as Submitter

Accreditation Certificate 

Number and Dates of current 

Accreditation period :

International Accreditation Services (IAS) 

ISO 17025 Accreditation Certificate #TL-371 

Expires July 1, 2023

 
 Version 10.0 (05/16)

Page of 8 8

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. 

FHWA Official Business Only:

Eligibility Letter

Number Date Key Words

 
MASH 2016 Test 3-30 Summary 

0.000 seconds 0.090 seconds 0.180 seconds 0.270 seconds 0.450 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41061-01 

Test Designation 3-30 

Test Date 4/9/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal) 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 1100C 

Year, Make, and Model 2015 Kia Rio 

Curb Mass 2,544.1 lbs (1,154.0 kg) 

Test Inertial Mass 2,444.9 lbs (1,109.0 kg) 

Gross Static Mass 2,610.2 lbs (1,184.0 kg) 

Impact Conditions 

Impact Velocity 63.14 mph (101.61 km/h) 

Impact Angle 0.7° 

Location / Orientation 15.0 in. (382 mm) From Vehicle 

Centerline on Driver Side 

Kinetic Energy 325.8 kip-feet (441.7 Kilojoules) 

Minimum KE Required 288.0 kip-feet (390.0 Kilojoules) 

Exit Conditions 

Exit Velocity 20.1 mph (32.4 km/h) 

Exit Angle 88.5° 

Final Vehicle Position 30.0 ft. (9.1 m) Traffic Side

27.7 ft. (8.4 m) Downstream 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability... Satisfactory 

Maximum Roll Angle 13.0 ° 

Maximum Pitch Angle 19.8 ° 

Maximum Yaw Angle 127.1 ° 

Occupant Risk 

................. ................ Longitudinal OIV 32.5 ft/s (9.9 m/s) 

Lateral OIV -2.6 ft/s (-0.8 m/s) 

Longitudinal RA 19.0 g 

Lateral RA 3.1 g 

THIV 32.8 ft/s (10.0 m/s) 

PHD 19.0 g 

ASI 1.35 

............... 

............ ..................... ..................... 

............ ......... ............... -

..................... ........................

.................. .............................. 

...... .............................. 

................. .................................

............................ ..................... 

........... ........................ Test Article Deflections 

............. ......... Static 9.2 in. (234 mm) 

Dynamic 18.7 in. (475 mm) 

Working Width 18.7 in. (475 mm) 

.............................. 

................ ........................... 

............... .................. 

............... 

.......... ............... 

.... ............ - Vehicle Damage 

Vehicle Damage Scale 12-FD-6 

CDC 12DEW3 

Maximum Deformation 0.4 in. (10 mm) Toe Pan 

.................... ......... ...... 

........... ......... .............................. 

.......... .... 

Figure 2 Summary of Test 3-30 

20 TR-P41061-01-A 
20 

MASH 2016 Test 3-31 Summary

0.000 seconds 0.100 seconds 0.200 seconds 0.300 seconds 0.400 seconds

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41062-01 

Test Designation 3-31 

Test Date 3/25/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) Nominal 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 2270P 

Year, Make, and Model 2017 Ram 1500 

Curb Mass 5,055.1 lbs (2,293.0 kg) 

Test Inertial Mass 5,004.4 lbs (2270.0 kg) 

Gross Static Mass 5,004.4 lbs (2270.0 kg) 

Impact Conditions 

Impact Velocity 62.66 mph (100.84 km/h) 

Impact Angle 0.3° 

Location / Orientation 1.3 in. (33 mm) From Vehicle 

Centerline on Passenger Side 

Kinetic Energy 656.8 kip-feet (890.5 Kilojoules) 

Minimum KE Required 594.0 kip-feet (806.0 Kilojoules) 

Exit Conditions 

Exit Velocity Not Applicable 

Exit Angle Not Applicable 

Final Vehicle Position 22.2 ft. (6.8 m) Downstream 

0.5 ft. (0.2 m) Field Side 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability Satisfactory 

Maximum Roll Angle -1.5° 

Maximum Pitch Angle 5.3° 

Maximum Yaw Angle 4.8° 

Occupant Risk 

................. ................ Longitudinal OIV 27.6 ft/s (8.4 m/s) 

Lateral OIV 0.0 ft/s (-0.0 m/s) 

Longitudinal RA 12.4 g 

Lateral RA ... 1.3 g 

THIV 27.6 ft/s (8.4 m/s) 

PHD 12.4 g 

ASI 0.65 

............... 

............ ..................... ..................... -

............ ......... ............... -

..................... ..................... -

.................. .............................. 

...... .............................. 

................. .................................

............................ ..................... 

........... ........................ Test Article Deflections 

............. ......... Static .9 in. (23 mm) 

Dynamic 1.2 in. (30 mm) 

Working Width Not Applicable 

.............................. 

................ ........................... 

............... .................. 

............... 

.......... .................. 

.... ............ Vehicle Damage 

.................... ......... Vehicle Damage Scale 12FDEW2 

CDC 12-FD-3 

Maximum Deformation 0.2 in (5 mm) Floor Pan/Toe pan

...... 

........... ......... .............................. 

.......... .... 

TR-P41062-01-A 
20 

 

MASH 2016 Test 3-32 Summary

0.000 seconds 0.085 seconds 0.180 seconds 0.340 seconds 0.425 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41295-01 

Test Designation 3-32 

Test Date 10/8/21 

................. 

............ 

............ 

..................... 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal) 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

................. 

............................ 

........... 

............. 

................ 

TEST VEHICLE 

Type / Designation 1100C 

Year, Make, and Model 2015 Kia Rio 

Curb Mass 2,550.7 lbs (1,157.0 kg) 

Test Inertial Mass 2,447.1 lbs (1,110.0 kg) 

Gross Static Mass 2,612.4 lbs (1,185.0 kg) 

.......... 

.... 

.................... 

........... 

.......... 

Impact Conditions 

Impact Velocity 62.44 mph (100.49 km/h) 

Impact Angle 4.8° 

Location / Orientation 1.2 in. (31 mm) From Vehicle 

Centerline on the Driver Side 

Kinetic Energy 319.0 kip-feet (432.4 Kilojoules)

Minimum KE 288.0 kip-feet (390.0 Kilojoules)

................ 

..................... 

......... 

.................. 

...................... 

Exit Conditions 

Exit Velocity 10.69 mph (17.20 km/h) 

Exit Angle 2.1° 

Final Vehicle Position 0.3 ft. (0.1 m) Field Side 

4.0 ft. (1.2 m) Downstream 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability... Satisfactory 

Maximum Roll Angle 8.1 ° 

Maximum Pitch Angle -14.4 ° 

Maximum Yaw Angle 6.6 ° 

..................... 

........................ 

......... 

............... 

............... 

............... 

............ 

......... 

......... 

Occupant Risk 

Longitudinal OIV 35.4 ft/s (10.8 m/s) 

Lateral OIV 2.3 ft/s (0.7 m/s) 

Longitudinal RA -19.0 g 

Lateral RA ... 3.5 g 

THIV 35.8 ft/s (10.9 m/s) 

PHD 19.1 g 

ASI ... 1.40 

............... 

..................... 

............... 

.....................

..............................

.............................. 

..............................

Test Article Deflections 

Static 2.7 ft. (0.8 m) 

Dynamic 3.3 ft. (1.0 m) 

Working Width 3.6 ft. (1.1 m) 

.............................. 

........................... 

.................. 

Vehicle Damage 

Vehicle Damage Scale 12-FD-6 

CDC 12DEW3 

Maximum Deformattion 2.6 in. (66 mm)* 

...... 

.............................. 

..... 

* Caused by vehicle’s hood, not the article. Figure 2 Summary of Test 3-32 

TR-P41295-01-A 
20 

MASH 2016 Test 3-33 Summary

0.000 seconds 0.100 seconds 0.200 seconds 0.300 seconds 0.400 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41064-01 

Test Designation 3-33 

Test Date 4/20/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal) 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 2270P 

Year, Make, and Model 2015 Ram 1500 

Curb Mass 4,975.7 lbs (2,257.0 kg) 

Test Inertial Mass 5,013.2 lbs (2274.0 kg) 

Gross Static Mass 5,013.2 lbs (2274.0 kg) 

Impact Conditions 

Impact Velocity 62.39 mph (100.41 km/h) 

Impact Angle 4.8° 

Location / Orientation 3.4 in. (86 mm) From Vehicle 

Centerline on Driver Side 

Kinetic Energy 652.4 kip-feet (884.5 Kilojoules) 

Minimum KE Required 594.0 kip-feet (806.0 Kilojoules) 

Exit Conditions 

Exit Velocity 24.10 mph (38.79 km/h) 

Exit Angle 11.2° 

Final Vehicle Position 32.8 ft. (10.0 m) Downstream 

7.5 ft. (2.3 m) Field side 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability Satisfactory 

Maximum Roll Angle -13.3° 

Maximum Pitch Angle -6.5° 

Maximum Yaw Angle -14.3° 

Occupant Risk 

................. ................ Longitudinal OIV 25.9 ft/s (7.9 m/s) 

Lateral OIV -3.6 ft/s (-1.1 m/s) 

Longitudinal RA -10.8 g 

Lateral RA ... 4.3 g 

THIV 25.9 ft/s (7.9 m/s) 

PHD 11.4 g 

ASI ... 0.80 

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........... ........................ Test Article Deflections 

............. ......... Static 3.0 ft. (0.9 m) 

Dynamic 3.7 ft. (1.1 m) 

Working Width 10.7 ft. (3.3 m) 

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.... ............ Vehicle Damage 

.................... ......... Vehicle Damage Scale 12FDEW3 

CDC 12-FD-5 

Maximum Deformation 2.1 in (61 mm) Floor Pan 

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Figure 2 Summary of Test 3-33 

TR-P41064-01-A
20 

MASH 2016 Test 3-34 Summary

0.000 seconds 0.100 seconds 0.200 seconds 0.300 seconds 0.400 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41065-01 

Test Designation 3-34 

Test Date 3/11/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal) 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 1100C 

Year, Make, and Model 2015 Kia Rio 

Curb Mass 2,561.7 lbs (1,162.0 kg) 

Test Inertial Mass 2,442.7 lbs (1,108.0 kg) 

Gross Static Mass 2,612.4 lbs (1,185.0 kg) 

Impact Conditions 

Impact Velocity 63.99 mph (102.98 km/h) 

Impact Angle 15.2° 

Location / Orientation 18" Downstream of Post 1 

Impact Severity 22.4 kip-ft (30.4 kJ) 

Minimum IS Required 19 kip-ft. (26 kJ) 

Exit Conditions 

Exit Velocity 61.45 mph (98.93 km/h) 

Exit Angle 3.1° 

Final Vehicle Position 126.0 ft. (38.4 m) Downstream 

4.9 ft. (1.5 m) Impact side 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability Satisfactory 

Maximum Roll Angle 16.4 ° 

Maximum Pitch Angle -10.4 ° 

Maximum Yaw Angle -147.5 ° 

Occupant Risk 

................. ................ Longitudinal OIV 9.8 ft/s (3.0 m/s) 

Lateral OIV 16.4 ft/s (5.0 m/s) 

Longitudinal RA -15.3 g 

Lateral RA ... -9.4 g 

THIV 21.3 ft/s (6.5 m/s) 

PHD 15.3 g 

ASI ... 0.71 

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........... ......... Test Article Deflections 

............. Static 15.6 in. (396 mm)

Dynamic 19.9 in. (505 mm)

Working Width 36.9 in. (937mm) 

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.... ......... Vehicle Damage 

.................... ......... Vehicle Damage Scale 12FR-3 

CDC 12FRES7 

Maximum Deformation 2.7 in. (69 mm) Side Front Panel 

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Figure 2 Summary of Test 3-34 

TR-P41065-01-NC 
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MASH 2016 Test 3-35 Summary 

0.000 seconds 0.090 seconds 0.180 seconds 0.270 seconds 0.450 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41244-01 

Test Designation 3-35 

Test Date 8/9/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal)

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 2270P 

Year, Make, and Model 2015 Ram 1500 

Curb Mass 5,112.4 lbs (2,319.0 kg) 

Test Inertial Mass 5,011.0 lbs (2,273.0 kg) 

Gross Static Mass 5,011.0 lbs (2,273.0 kg) 

Impact Conditions 

Impact Velocity 62.53 mph (100.63 km/h) 

Impact Angle 26.3° 

Location / Orientation Post 3 - Beginning of the 

Length of Need 

Impact Severity 128.6 kip-feet (174.3 Kilojoules)

Minimum IS Required 106.0 kip-feet (144.0 Kilojoules)

Exit Conditions 

Exit Velocity 10.81 mph (17.40 km/h) 

Exit Angle 6.3 ° 

Final Vehicle Position 2.6 ft. (0.8 m) Impact Side 

62.8 ft. (19.1 m) Downstream

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability Satisfactory 

Maximum Roll Angle -6.4° 

Maximum Pitch Angle -8.3° 

Maximum Yaw Angle -27.5° 

Occupant Risk 

Longitudinal OIV 21.7 ft/s (6.6 m/s) 

Lateral OIV 13.1 ft/s (4.0 m/s) 

Longitudinal RA -14.3 g 

Lateral RA -5.9 g 

THIV 23.3 ft/s (7.1 m/s) 

PHD 14.9 g 

ASI 0.64 

Test Article Deflections 

Static 4.5 ft. (1.4 m) 

Dynamic 5.3 ft. (1.6 m) 

Working Width 5.8 ft. (1.8 m) 

Vehicle Damage 

Vehicle Damage Scale 12-FD-6 

CDC 12DEW3 

Maximum Deformation 2.2 in. (56 mm) Toe Pan

Figure 2 Summary of Test 3-35 

20 TR-P41244-01-NC
20 

 

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MASH 2016 Test 3-37b Summary 

0.000 seconds 0.065 seconds 0.130 seconds 0.260 seconds 0.325 seconds 

GENERAL INFORMATION 

Test Agency Applus IDIADA KARCO 

Test Number P41228-01 

Test Designation 3-37b 

Test Date 7/22/21 

TEST ARTICLE 

Name / Model MATTTM 

Type Terminal 

Installation Length 143.8 ft. (43.8 m) (Nominal) 

Terminal Length 36.4 ft. (11.1 m) 

Road Surface Smooth Concrete to Fine 

Silty Soil 

TEST VEHICLE 

Type / Designation 1100C 

Year, Make, and Model 2015 Kia Rio 

Curb Mass 2,431.7 lbs (1,103.0 kg) 

Test Inertial Mass 2,431.7 lbs (1,103.0 kg) 

Gross Static Mass 2,575.0 lbs (1,168.0 kg) 

Impact Conditions 

Impact Velocity 63.58 mph (102.33 km/h) 

Impact Angle 25.2° 

Location / Orientation 6.9 in. (176 mm) Downstream 

from Midpoint of Post 3 

Impact Severity 59.6 kip-feet (80.8 Kilojoules) 

Minimum IS Required 51.0 kip-feet (69.7 Kilojoules) 

Exit Conditions 

Exit Velocity 50.37 mph (81.06 km/h) 

Exit Angle -31.8° 

Final Vehicle Position 27.4 ft. (8.3 m) Field Side 

 72.9 ft. (22.2 m) Downstream 

Vehicle Snagging None 

Vehicle Pocketing None 

Vehicle Stability Satisfactory 

Maximum Roll Angle 10.7 

Maximum Pitch Angle 16.8 

Maximum Yaw Angle 57.1 

Occupant Risk 

Longitudinal OIV 38.4 ft/s (11.7 m/s) 

Lateral OIV 10.5 ft/s (3.23 m/s) 

Longitudinal RA -17.8 g 

Lateral RA 6.3 g 

THIV 39.7 ft/s (12.1 m/s) 

PHD 17.8 g 

ASI 1.19 

Test Article Deflections 

Static 14.8 ft. (4.5 m) 

Dynamic 15.0 ft. (4.6 m) 

Working Width 15. 3 ft. (4.7 m) 

Vehicle Damage 

Vehicle Damage Scale 12-FD-6 

CDC 12DEW4 

Maximum Deformation 3.0 in. (76 mm) Windshield 

* Caused by vehicle’s hood, not the article. Figure 2 Summary of Test 3-37b 

TR-P41228-01-A 
NOTES: 

1. VARIOUS DELINEATION OPTIONS ARE AVAILABLE. 

2. MATTTM TO BE INSTALLED TANGENT, WITH NO RADII OR CURVING OF

 SYSTEM GUARDRAIL WITHIN SYSTEM. 

3. SYSTEM REQUIRES SPECIFIC ASTM A325 BOLT/NUT COMBINATIONS TO BE

 TORQUED TO 65 lb-ft [88 Nm], ALL OTHER FASTENERS TO BE TIGHTENED SNUG.

4. REFER TO MATTTM ASSEMBLY MANUAL (628155) AND DWG SS-6288 FOR FULL

 DETAILS OF ASSEMBLY AND INSTALLATION. 

5. PROPER SITE GRADING IS REQUIRED. 

2023 

MATTTM (Median Attenuating TREND® Terminal) 

SEWxx 

SHEET NO. DATE 

1 of 2 1/24/2023 

THP-FE-051 Rev E, 8/31/18 
INTENDED USE 

The MATTTM ("Median Attenuating TREND® Terminal") is a tangent, double-sided, 

redirective/gating, energy-absorbing terminal for use with various longitudinal highway barriers, in 

either unidirectional or bidirectional applications, to include roadside, shoulder, median, and gore 

applications. It is also suitable for use as an approach or departure terminal. 

FEATURES 

The MATTTM has a system length of 34' 4-1/2" [10.48 m], which is measured from the center of 

Post 1 to the splice location directly behind Post 6. The impact head extends forward of the center 

of Post 1 by 2' [610 mm], for an effective length of 36' 4-1/2" [11.09 m]. 

The MATTTM consists of an impact head, angle strut, tension cable, one (1) Controlled Release 

Post ("CRP"), four (4) Steel Yielding Terminal Posts ("SYTP") and one (1) standard line post. All 

system posts utilize below-grade soil plates for increased soil bearing resistance. 

The system includes six (6) sets (Left/Right) of proprietary W-beam 10/12 ga guardrail, of which 

three (3) sets feature an integrated shaper fin and three (3) sets do not. Posts 1-5 use 8" [203 mm] 

deep steel spacers (double at Post 1-2, single at Posts 3-5) while Post 6 utilizes 8" [203 mm] deep 

guardrail composite blockouts. System installation height, as tested, was 31" [787 mm] with a 

tolerance of +1" [25 mm], -0". 

During redirective impacts within MASH 2016 Test Level 3 ("TL-3") criteria, the MATTTM is 

designed to redirect vehicles, starting at the beginning length of need ("BLON") at Post 3 - which is

located 12' 6" [3.81 m] from Post 1. During end-on impacts within MASH 2016 TL-3 criteria, the

MATTTM is designed to absorb a vehicle's impacting energy by the tearing of metal tabs between 

each slot combined with the friction developed between each sliding rail at each post connection 

and also by the deformation of steel components as each W-beam guardrail slides rearward over 

each subsequent W-beam guardrail with integrated shaper fins. MATTTM can be connected directly 

to 8" [203 mm] blocked Midwest Guardrail System ("MGS"). 

SPECIFICATIONS 

System Length: 34'-4 1/2" [10.48 m]

System Width: 29" [737 mm] 

System Height: 31", +1"/-0" [787 mm, +25 mm/-0 mm] 

System Weight: ~1,525 lbs [692 kg] 

ELIGIBILITY 

The MATTTM has been tested in conformance to MASH 2nd Edition (2016) with 2020 Errata Test 

Level 3 specifications and is eligible for Federal reimbursement by FHWA.

FHWA Eligibility Letter(s): [Report #] dated [Month Day, Year] for MASH 2nd Edition (2016) 

Test Level 3. 

REFERENCES 

American Association of State Highway and Transportation Officials (AASHTO), Manual for 

Assessing Safety Hardware (MASH) 2nd Edition (2016) with 2020 Errata. 

CONTACT INFORMATION 

15601 Dallas Parkway, Suite 525 Addison, TX 75001

Telephone: (888) 356-2363 Fax: (800) 770-6755

https://trinityhighway.com 

MATTTM (Median Attenuating TREND® Terminal) 

SEWxx 

SHEET NO. DATE 

2 of 2 1/24/2023 

THP-FE-051 Rev E, 8/31/18