What type of document is the MUTCD?

The Manual on Uniform Traffic Control Devices (MUTCD) serves as an established benchmark for traffic control devices used across the United States. It outlines the standards for signage, signals, and pavement markings, ensuring consistency and safety in traffic management. By following the guidelines set forth in the MUTCD, traffic control devices are uniform, which helps maintain safe navigation for drivers and pedestrians.

This document is recognized as an accepted standard and practice because it consolidates the best practices in traffic management into a cohesive reference used by state and local agencies nationwide. It is not merely a guideline for construction workers or a specialized manual for flaggers, nor is it specific to any one state; rather, it functions as an overarching standard that guides the design and application of traffic control devices in various roadway contexts. Therefore, identifying it as an accepted standard and practices reflects its role in promoting uniformity and safety on roadways.