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ATSSA Traffic Control Supervisor Recertification (missing some basics) Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+
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Formula for Min. taper length Correct Answer: L=(WS²)/60 for 40MPH or less, L=WS for 45MPH or more speed used in formulas should be Correct Answer: The off peak 85th percentile. Which is the speed at or below which 85% of vehicles travel operating speed in free flow conditions Distance of L for 25 MPH with 12' Lane width Correct Answer: 125' Distance of L for 35 MPH with 12' Lane width Correct Answer: 245' Distance of L for 45 MPH with 12' Lane width Correct Answer: 540' 2 Distance of L for 55 MPH with 12' Lane width Correct Answer: 660' Distance of L for 65 MPH 12' Lane width Correct Answer: 780' Merging Taper Length Correct Answer: L Minimum
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