ATSSA Traffic Control Supervisor Re-certification | Questions and Correct Solutions | Latest Update 2024/2025 | Graded A+

ATSSA Traffic Control Supervisor Re-certification | Questions and Correct Solutions | Latest Update 2024/2025 | Graded A+ L=(WS²)/60 for 40MPH or less, L=WS for 45MPH or more - Answer -Formula for Min. taper length The off peak 85th percentile. Which is the speed at or below which 85% of vehicles travel operating speed in free flow conditions - Answer - speed used in formulas should be 125' - Answer -Distance of L for 25 MPH with 12' Lane width 245' - Answer -Distance of L for 35 MPH with 12' Lane width 540' - Answer -Distance of L for 45 MPH with 12' Lane width 660' - Answer -Distance of L for 55 MPH with 12' Lane width 780' - Answer -Distance of L for 65 MPH 12' Lane width L Minimum - Answer -Merging Taper Length1/2 L Minimum - Answer -Shifting Taper Length 1/3 L Minimum - Answer -Shoulder Taper Length 50'-100' regardless of speed 6 devices 10'-20' apart - Answer -One-Lane, Two-Way Taper (Flagger taper) Length and number of devices 50'-100' per lane - Answer -Downstream taper Lengt