this post was submitted on 23 Jul 2026
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Here are the publications that matter. Everyone should be watching these for updates. When a change is proposed they hold public hearings that lists the contact information for the committee members and feedback phases open to the public.
Manual for Assessing Safety Hardware (MASH), 2016, AASHTO
These are the engineers who are responsible for running the experiments that determine safety standards.
Manual on Uniform Traffic Control Devices (MUTCD)
"The MUTCD is the law governing all traffic control devices. Non-compliance with the MUTCD ultimately can result in the loss of federal-aid funds as well as in a significant increase in tort liability."
Notes: