A list of authorized requests for each Interim Approval is also provided. Interim Approvals that have been issued by FHWA are listed below, with links to the actual approval document and background information for each. The letter of request (on agency letterhead) should be addressed to the Director of the Office of Transportation Operations, Federal Highway Administration, and should be sent electronically as an attachment (PDF or Word Document) to an e-mail to: A State may request Interim Approval for all jurisdictions in that State. The request must indicate whether blanket jurisdiction-wide approval is being requested or must state the location(s) where the device will be used, and must include the jurisdiction's agreement to comply with items B, C, and D in paragraph 18 of Section 1A.10 of the 2009 MUTCD. Interim Approvals are considered by the Office of Transportation Operations based on the results of successful experimentation, studies, or research, and an intention to place the new or revised device into a future rulemaking process for MUTCD revisions.Īny jurisdiction that wishes to use a device or application that has received Interim Approval must submit a written request to the FHWA, Director of the Office of Transportation Operations. Such approvals allow the interim use, pending official rulemaking, of a new traffic control device, a revision to the application or manner of use of an existing traffic control device, or a provision not specifically described in the MUTCD. Section 1A.10 of the MUTCD contains a provision authorizing the Federal Highway Administration to issue Interim Approvals.

Resources Interim Approvals Issued by FHWA

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