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[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.
Manual for Assessing Safety Hardware (MASH), crash testing criteria for safety hardware devices for use on highways; it updates and replaces NCHRP Report 350. In addition to its publications, AASHTO performs or cooperates in research projects.
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 ...
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]
The National Cooperative Highway Research Program was established in 1962 under TRB. Governments needed to tackle what Rex M. Whitton termed “clearly a supreme challenge to research”: moving people and goods in cities by using a fixed percentage of highway funding dedicated to research.
An impact attenuator, also known as a crash cushion, crash attenuator, or cowboy cushion, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the colliding vehicle's kinetic energy.
Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...
Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.