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Manual on Uniform Traffic Control Devices (MUTCD) arrows logo
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The MUTCD is a complex and evolving document. The Knowledge element of this Web site provides historic information about the development of traffic control devices and the MUTCD, and overview of who benefits from the information contained in the publication, and the process for updating standards. There's even a list of frequently asked questions about the MUTCD, which is updated regularly.

To go to a Knowledge topic, use the navigation at left, or select a topic below.


Evolution of the MUTCD

Who Uses the MUTCD

2009 Edition

Color Specifications

Amendment Process


Standard Highway Signs and Markings (SHSM) Book—Design Details

Frequently Asked Questions