Where did the numbers for the Pedestrian Volume and School Crossing signal warrants come from?
The Pedestrian Volume warrant (currently Warrant 4) has been in the MUTCD since the 1935 edition. In the 2009 edition, the warrant criteria and numbers for this warrant were revised based on research as documented in the 2006 report “Improving Pedestrian Safety at Unsignalized Pedestrian Crossings” (TCRP Report 112/NCHRP Report 562.). The School Crossing warrant (currently Warrant 5), was added to the MUTCD in 1971. No information is available on how that warrant was developed or what it was based on, although there may have been some supporting research in the late 60s or 1970. Return to Top • Q: Sections 4D.01 and 4D.32 of the 2009 MUTCD refer to “covering” of signal faces as one of the acceptable methods for indicating a signal is not in operation. In my jurisdiction, yellow retroreflective borders are used on the signal backplates of some signal faces. If such a face is to be covered, are there any specific requirements about covering the yellow retroreflective backplate borders? A
Related Questions
- With the increase in traffic volumes, the signal warrants are being met more frequently. Is the FHWA considering an increase in volume levels for traffic signal warrants?
- How does a pedestrian signal work? What should I do when flashing "Don Walk" appears before Ive completed crossing the street?
- Where did the numbers come from for the vehicular volume signal warrants in the MUTCD?
