Red Interval
![Red Interval](/sites/TEA/Functions/SpecialAssistant/TrafficEngineeringBranch/BMTE/calcTrafficSignals/signalsTutorial/PublishingImages/Vocab_Interval_Red.jpg)
An all-red clearance interval will safely clear all vehicles from the intersection before an opposing flow of traffic begins. The all-red interval varies by intersection width, speed limit, and vehicle length. Typically all-red interval timings range from 1 second to 3 seconds. See the BMTE calculator module to calculate all-red interval timing.
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