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Details for Request 4-30


Request Type: Interpretation
Requesting Agency: Unknown
State: XX
Date of Request: 2/23/1981
Topic: Signal Operation Must Relate to Traffic Flow - Terms Defined
Affected Portions of 2009 MUTCD: Section 4D.01
FHWA Ruling: 5/5/1981 – The use of the word "shall" in "signals shall be operated in a manner consistent with traffic requirements" means that this is mandatory. "Traffic requirements" relates to factors such as volumes and speeds. Updating of data "regularly" means
Keywords: Traffic Control Signals

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