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Annual NCHRP funding has been approximately $37 million in recent years. [4] FHWA provides the funds to the NCHRP through a cooperative agreement with the National Academy of Sciences, the parent organization of the Transportation Research Board. [4]
[6] [7] A NCHRP Report 350 crash test of ET-Plus was conducted. Based on this specific test and an earlier full battery of tests of ET-2000 which shared the same extrusion throat design, the Federal Highway Administration approved ET-Plus to be used on highways in a letter dated January 18, 2000.
Much of AASHTO's current research is performed by the National Cooperative Highway Research Program (NCHRP) which is administered by the Transportation Research Board (TRB), a division of the National Academy of Sciences, Engineering, and Medicine. AASHTO re:source, formerly the AASHTO Materials Reference Laboratory (AMRL), accredits laboratories.
Within NCHRP 350 there are six separate test levels (TL) representing different vehicles, impact angles, and speeds. Test level three (TL-3) is probably the most common as it establishes safety criteria for both small cars and pickups at 60 miles per hour (97 km/h). This category of traffic accounts for the majority of all vehicle traffic in ...
Trinity conducted a series of eight crash tests [40] at 27-inch and 31-inch heights to conform to the prevailing standard for guardrails of this type per the National Cooperative Highway Research Program (NCHRP) Report 350. [41] After a review by the FHWA and an independent expert, in March 2015 the FHWA announced that the ET Plus as sold by ...
To address these concerns, significant research and development of a system that could contain and redirect vehicles of varying weights and heights was developed and crash tested (both controlled and simulated). As a result, the Midwest Guardrail System (MGS) was developed and successfully crash tested per NCHRP Report 350 TL-3 criteria. [26]
In the United States, impact attenuators are tested and classified according to AASHTO Manual for Assessing Safety Hardware (MASH), [13] first issued in 2016 to supersede National Cooperative Highway Research Program (NCHRP) Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features (1993). [14]
The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program and the Federal Lands Highway Program .