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Supplemental notice of proposed amendments (SNPA); request for comments.

In an earlier notice of proposed amendments (NPA), the FHWA proposed to amend the Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD) to include methods to maintain traffic sign retroreflectivity. Based on the review and analysis of the numerous comments received in response to the NPA, the FHWA has decided to substantially revise the proposed amendments to the MUTCD and, as a result, is issuing this SNPA. With this SNPA, the FHWA proposes to amend the MUTCD to include a standard for minimum maintained levels of traffic sign retroreflectivity and methods to maintain traffic sign retroreflectivity at or above these levels.

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