The compliance of a Connecticut-designed and -developed impact-attenuation system, the Narrow Connecticut Impact-Attenuation System (NCIAS), with NCHRP Report 350 guidelines is documented. Background information about the system is given, including information on the performance of field installation locations and the availability and cost of installation. NCHRP Report 350 specifies eight full-scale crash tests for redirective/nongating devices. Three of the eight tests were not conducted on the NCIAS because they are similar to three tests conducted under the NCHRP Report 230 requirements, which the NCIAS passed. The five remaining tests were performed. One test was repeated after one of the cylinders was strengthened. All tests were conducted in accordance with the guidelines of NCHRP Report 350 for Test Level 3 devices. The NCIAS passed all requirements for four of the five test designations. It did not pass the requirements for the reverse hit test; therefore, the NCIAS must not be installed at locations where it may be struck from the reverse direction. FHWA has approved the use of the NCIAS on the National Highway System at locations where reverse-direction impacts are unlikely.


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    Title :

    Narrow Connecticut Impact-Attenuation System: Synopsis Including NCHRP Report 350 Crash Test Results


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2004-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    NCHRP Report 350 Crash Test Results for Connecticut Truck-Mounted Attenuator

    Carney, John F. / Dougan, Charles E. / Lohrey, Eric C. | Transportation Research Record | 1996


    NCHRP Report 350 Crash Test Results for Connecticut Truck-Mounted Attenuator

    Carney, John / Dougan, Charles / Lohrey, Eric | Transportation Research Record | 1996