ATSSA Traffic Control
Supervisor Re‑Certification
Exam 2026 Questions and
Answers Study Guide
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ATSSA Traffic Control Supervisor Re‑Certification Exam 2026 Questions and Answers Study Guide Page 1 ATSSA Traffic Control Supervisor Re‑Certification Exam 2026 Questions and Answers Study Guide.pdf
, ATSSA Traffic Control Supervisor Re-certification Exam 2026 2 2026-03-25
Terms in this set (53)
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 speed used in formulas should be
at or 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
ATSSA Traffic Control Supervisor Re-certification Exam 2026 Page 2 ATSSA Traffic Control Supervisor Re-certification Exam 2026.pdf