How does a DOT decide whether a traffic signal should be installed on a State Highway?
Answer
The Federal Highway Administration (FHWA) publishes the Manual on Uniform Traffic Control Devices:
- Manual on Uniform Traffic Control Devices (MUTCD) 2009 Edition Chapter 4C. Traffic Control Signal Needs Studies. Section 4C.01 Studies and Factors for Justifying Traffic Control Signals, provides guidelines concerning factors for justifying traffic control signals.
- MUTCD, 2023 updates. Most recent edition
The MUTCD newsfeedprovides updates.
Each state may also have regulations and policies concerning traffic signals on highways. The following link provides access to State Transportation Department websites.
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