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MASH...WE'RE READY WHEN YOU ARE.

In 2009, AASHTO introduced new testing criteria for roadside hardware with the Manual for Assessing Safety Hardware (MASH). MASH provides

testing guidelines like 350, but takes today’s vehicle fleet and road designs into consideration. Trinity Highway is Ahead of the Curve® actively

developing new products to the MASH testing standards. Offering numerous roadside solutions, Trinity Highway fully supports the

AASHTO/FHWA agreement to transition to MASH.

Trinity Highway MASH Products

HARP®

MASH High-Tension Anchor Release Post

VIEW PRODUCT

SoftStop® System

MASH End Terminal

VIEW PRODUCT

QuadGuard M10®

MASH Crash Cushion

VIEW PRODUCT

NU-GUARD™-31

MASH Strong Post Guardrail System

VIEW PRODUCT
ALL MASH PRODUCTS

SIGNIFICANT CHANGES BETWEEN NCHRP 350 & MASH

TOPICNCHRP 350 MASH
Small car test vehicle820C vehicle (1,800 lbs.)1100C vehicle (2,420 lbs.)
Small car impact angle20 degrees25 degrees
Light truck test vehicle2000P vehicle (4,400 lbs.)2270P vehicle (5,000 lbs.)
Gating terminals and crash cushion impact angle15 degrees5 degrees
Variable message signs and arrow board trailersNo mentionAdded to TMA crash test matrix
Support structure and work zone traffic control device testingOnly small car testedSmall car and light truck tested
Windshield damage criteriaSubjective/QualitativeObjective/Quantitative
Vehicle rebound in crash cushion testsNoneRequired
  • FHWA Roadside Hardware Policy and Guidance

STATUS OF AASHTO MASH IMPLEMENTATION

DECEMBER 31, 2017

  • In Place
  • Expected by a later date

W-BEAM GUARDRAIL
PERMANENT CONCRETE BARRIERS

JUNE 30, 2018

  • In Place
  • Expected by a later date

W-BEAM END TERMINALS

DECEMBER 31, 2018

  • In Place
  • Expected by a later date

CABLE BARRIERS, CABLE TERMINALS, AND CRASH CUSHIONS

DECEMBER 31, 2019

  • In Place
  • Expected by date
  • Expected by a later date

BRIDGE RAILS, TRANSITIONS, SIGN SUPPORTS, TEMPORARY WORK ZONE DEVICES, ALL OTHER BREAKAWAY HARDWARE, ETC.

  • Status of AASHTO MASH Implementation

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