Concrete median barriers (CMB) are used by Departments of Transportation (DOTs) as both permanent and temporary barriers for providing separation of traffic. Typically, the crashworthiness of these barriers is tested and evaluated through full-scale crash testing conducted per current roadside safety device standards. Occasionally, DOTs need to mount chain link fences on top of these barriers to serve different purposes. In other cases, due to space restrictions, signs or light poles are placed on top of such barriers. When DOTs mount these objects on top of barriers the crashworthiness of the modified system will need to be evaluated. The purpose of this research was to investigate the crashworthiness of a 36-inch-tall concrete single slope median barrier with chain link fence mounted on top under MASH evaluation criteria. The structural capacity and the occupant risk factors of the proposed barrier system was evaluated with respect to MASH Test Level 4 (TL-4) criteria through full-scale crash testing. The CMB with fence mounted on top met the performance criteria for MASH Test 4-11 for longitudinal barriers, but failed MASH Test 4-12.
