When FHWA issues an Interim Approval, does that mean that all jurisdictions can start using the new type of device or design?
No, Interim Approval is not a blanket approval for use by all jurisdictions. However, any agency that wants to use a new device or design for which FHWA has issued an Interim Approval can easily receive FHWA approval to use it. Unlike experimentation, Interim Approvals have already undergone successful testing and evaluation, so FHWA does not require data collection or evaluations as a condition of a jurisdiction receiving approval to use an Interim Approval item. Also unlike experimentation, a State can ask FHWA to grant permission for Statewide use of an Interim Approval item by all State and local highway agencies in the State. Refer to the discussion of Interim Approval in Section 1A.10 of the MUTCD, and also refer to the information on the Interim Approvals page of the MUTCD website. Return to Top • Q: There are some “gray areas” where the MUTCD text or figures aren’t clear in what exactly is required, allowed, or prohibited. Is there a way to get official clarification of meaning
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- When FHWA issues an Interim Approval, does that mean that all jurisdictions can start using the new type of device or design?
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