Implementation of the Manual for Assessing Safety Hardware (MASH)

California Department of Transportation's (Caltrans) timeline for implementation of roadside safety hardware and evaluation of new products under MASH is consistent with the Association of State Highway and Transportation Officials (AASHTO) and Federal Highway Administration (FHWA) Joint Implementation Agreement for MASH.

Caltrans Policy Documents on MASH Implementation

List of MASH Devices:

List of NCHRP Report 350 Devices:

Other Resources: