ATSSA Traffic Control
Supervisor Recertification
Exam 2026 Test Bank
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, ATSSA Traffic Control Supervisor Re-certification Exam 2026 ATSSA Traffic Control Supervisor Re-certification Exam 2026.pdf 2026-03-21
L=(WS²)/60 for 40MPH or less, Formula for Min. taper length
L=WS for 45MPH or more
The off peak 85th percentile. Which is the speed at or speed used in formulas should be
below which 85% of vehicles travel operating speed in
free flow conditions
125' Distance of L for 25 MPH with 12' Lane width
245' Distance of L for 35 MPH with 12' Lane width
540' Distance of L for 45 MPH with 12' Lane width
660' Distance of L for 55 MPH with 12' Lane width
780' Distance of L for 65 MPH 12' Lane width
L Minimum Merging Taper Length
1/2 L Minimum Shifting Taper Length
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