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
SoftStop® System
MASH End Terminal
QuadGuard M10®
MASH Crash Cushion
NU-GUARD™-31
MASH Strong Post Guardrail System
SIGNIFICANT CHANGES BETWEEN NCHRP 350 & MASH
TOPIC | NCHRP 350 | MASH | |||
---|---|---|---|---|---|
Small car test vehicle | 820C vehicle (1,800 lbs.) | 1100C vehicle (2,420 lbs.) | |||
Small car impact angle | 20 degrees | 25 degrees | |||
Light truck test vehicle | 2000P vehicle (4,400 lbs.) | 2270P vehicle (5,000 lbs.) | |||
Gating terminals and crash cushion impact angle | 15 degrees | 5 degrees | |||
Variable message signs and arrow board trailers | No mention | Added to TMA crash test matrix | |||
Support structure and work zone traffic control device testing | Only small car tested | Small car and light truck tested | |||
Windshield damage criteria | Subjective/Qualitative | Objective/Quantitative | |||
Vehicle rebound in crash cushion tests | None | Required |
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.