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.
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Caltrans Policy Documents on MASH Implementation
- 12/30/20 Memo: Implementation of Manual for Assessing Safety Hardware (Mash) for Temporary Traffic Control Devices (PDF)
- 12/9/19 Memo: Implementation of Temporary Concrete Railing (PDF)
- 11/12/19 Memo: MASH Compliance Plan and Policy (PDF)
- 8/2/19 Memo: Interim Type Selection Guidelines for Bridge Railings in California (PDF)
- July 2019 MASH Implementation for California Bridge Railings (PDF)
- 12/23/16 Memo: Implementation of the Manual for Assessing Safety Hardware (PDF)
List of MASH Devices
- Inline W-Beam Terminals, MASH (XLSX)
- Concrete Barriers, MASH (XLSX)
- Median Terminals, MASH (XLSX)
- Permanent Narrow Crash Cushions, MASH (XLSX)
- Truck Mounted and Trailer Attenuators, MASH (XLSX)
- W-Beam Guardrail, MASH (Midwest Guardrail System) (XLSX)
- Bridge Rails (Engineering Services Owner), MASH (XLSX)
- All Other Longitudinal Barriers, MASH (XLSX)
List of NCHRP Report 350 Devices
- Cable Barriers, NCHRP (XLSX)
- Median Terminals, NCHRP (XLSX)
- Portable Barriers, NCHRP (XLSX)
- Thrie Beam Barriers, NCHRP (XLSX)
- Temporary Crash Cushions, NCHRP (XLSX)
- Wide Crash Cushions, NCHRP (XLSX)
- Work Zone Traffic Control Devices, NCHRP (pending)
- Sign Supports and all other breakaway hardware, NCHRP (XLSX) (Engineering Services Owner)
- TMAs, NCHRP (XLSX) (Engineering Services Owner)
- Bridge Rails, NCHRP (XLSX)