ATSSA TRAFFIC CONTROL SUPERVISOR RECERTIFICATION Exam Questions & Answers | Latest Already Graded A+ |Questions with Correct Answers 2026 latest update!!

ATSSA TRAFFIC CONTROL SUPERVISOR RE-
CERTIFICATION Exam Questions & Answers |
Latest Already Graded A+ |Questions with
Correct Answers 2026 latest update!!
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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 speed used in formulas should be
the speed 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


L Minimum Merging Taper Length

, 1/2 L Minimum Shifting Taper Length


1/3 L Minimum Shoulder Taper Length


50'-100' regardless of speed One-Lane, Two-Way Taper (Flagger taper) Length
6 devices 10'-20' apart and number of devices


50'-100' per lane Downstream taper Length


2L Tangent distance (between tapers)


1/2L Tangent distance before shifting taper


Buffer Space Activity Area Sub-components (3)
Work Space
Traffic Space


Recovery Area for errant vehicles: Longitudinal Buffer Space
Forgiving design
Protects workers and Motorists
Always completely empty or clear
No vehicles, truck-mounted
attenuator, equipment, or materials
STRONGLY RECOMMENDED: unless
there is a documented reason not to