ATSSA Traffic Control Supervisor Re-Certification Exam Questions And Correct Answers| 2026 Updated

ATSSA Traffic Control Supervisor Re-Certification Exam Questions And
Correct Answers| 2026 Updated

1. L=(WS²)/60 for 40MPH or less,


L=WS for 45MPH or more


Answer Formula for Min. taper length


2. 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


3. 125'


Answer Distance of L for 25 MPH with 12' Lane width


4. 245'




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, Answer Distance of L for 35 MPH with 12' Lane width


5. 540'


Answer Distance of L for 45 MPH with 12' Lane width


6. 660'


Answer Distance of L for 55 MPH with 12' Lane width


7. 780'


Answer Distance of L for 65 MPH 12' Lane width


8. L Minimum


Answer Merging Taper Length


9. 1/2 L Minimum


Answer Shifting Taper Length


10. 1/3 L Minimum


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, Answer Shoulder Taper Length


11. 50'-100' regardless of speed


6 devices 10'-20' apart


Answer One-Lane, Two-Way Taper (Flagger taper) Length and number of devices


12. 50'-100' per lane


Answer Downstream taper Length


13. 2L


Answer Tangent distance (between tapers)


14. 1/2L


Answer Tangent distance before shifting taper


15. Buffer Space


Work Space


3/