Q. Standards for Stoplight Interval Length


You can find the official Federal Highway Administration (FHWA) regulations on stoplight interval length in the Manual on Uniform Traffic Control Devices, section 4D.10: http://mutcd.fhwa.dot.gov/htm/2009/part4/part4d.htm

For the complete MUTCD, go to: http://mutcd.fhwa.dot.gov/htm/2009/html_index.htm

The FHWA home page is: http://www.fhwa.dot.gov/

  • Last Updated Dec 14, 2016
  • Views 2
  • Answered By David Martin

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