NCHRP 350* Requirements for Work Zone Devices

What They Mean for NH Municipalities

FHWA has mandated that all work zone devices used on the National Highway System (NHS) meet NCHRP 350 requirements. For new purchases of devices, FHWA has established various deadlines for meeting the NCHRP 350 criteria. One deadline has passed and others will occur soon.

Although few municipal roads are in the NHS, the standards and deadlines could apply in liability suits. It is therefore recommended that municipal road managers require suppliers to self-certify that new devices meet NCHRP 350 criteria. Municipalities can use existing devices as they complete their normal service life.

* NCHRP 350: National Cooperative Highway Research Program Report 350.

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