Manual for Assessing Safety Hardware (MASH) Related Memos

FHWA - FAQs Guardrail Height Memo - May 17, 2010

FHWA’s Federal-aid eligibility letter for Cable Barrier systems

FHWA - Clarifications on Implementing the AASHTO 2016 Manual for Assessing Safety Hardware

May 9, 2018. This document is a compilation of all questions and answers (Q&A) that have been developed to clarify the intent of the 2016 edition of the Manual for Assessing Safety Hardware (MASH) and to apply MASH. Also, to assist manufacturers, crash test laboratories, and transportation agencies in implementing the guidelines to develop and use roadside safety devices.

FHWA - Eligibility of Crash Cushion devices MASH 16 Sunset date - December 20, 2018

FHWA - FINAL Modification to December 2018 Sunset Date for MASH Cable Barriers & Terminals - August 13, 2018.pdf

FAQ about CDOT Guardrails, Crash Cushions, and End Treatments

Issuance Letter for the Manual for Assessing Safety Hardware (MASH) Implementation Updates - April 5, 2019

Issuance of Revised MASH Compliance Standard Plan - M-606-14 - Temporary Precast Type 7 Concrete Barrier - August 21, 2020

Project Support Memo - MASH Tested 31-inch Guardrail Implementation Policy and MASH Implementation Dates - December 29, 2015 in Guardrail