![]() ![]() Since it is not feasible to test all possible combinations in MASH, there is a need to provide guidelines to aid state DOTs in selecting appropriate testing protocols to evaluate the crashworthiness of Systems. The costs of these tests will fall directly on transportation agencies and the public. There are thousands of variations of Systems that state DOTs utilize. For each System, up to three full-scale crash tests need to be conducted on each variation and these crash tests can be expensive. ![]() The FHWA and AASHTO implementation plan requires Systems installed on national highway systems after Decemto comply with MASH 2016.Ī significant number of Systems still need to be evaluated to comply with MASH. The joint FHWA/AASHTO implementation plan for MASH devices ( ) requires highway agencies to evaluate many different designs of permanent sign supports, breakaway poles, and work zone traffic control devices (herein called “Systems”). To encourage state departments of transportation (DOTs) and hardware developers to advance hardware designs, the Federal Highway Administration (FHWA) and American Association of State Highway and Transportation Officials (AASHTO) collaborated on the development of the AASHTO Manual for Assessing Safety Hardware (MASH) implementation policy that includes sunset dates for various roadside hardware categories. ![]() Implementation of MASH for Sign Supports, Breakaway Poles, and Work Zone Traffic Control Devices (Phases I-IV) ![]()
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