ATSSA Traffic Control Supervisor Re-certification (missing some
ATSSA Traffic Control Supervisor Re-certification (missing some basics)
basics)Study
ACTUAL EXAM QUESTIONS WITH COMPLETE SOLUTION
online at https://quizlet.com/_4m7ng0
GUIDE (A+ GRADED 100% VERIFIED) LATEST VERSION 2025!!
1. L=(WS²)/60 for 40MPH or less, Formula for Min. taper length
L=WS for 45MPH or more
2. The off peak 85th percentile. speed used in formulas should be
Which is the speed at or below
which 85% of vehicles travel op-
erating speed in free flow con-
ditions
3. 125' Distance of L for 25 MPH with 12' Lane width
4. 245' Distance of L for 35 MPH with 12' Lane width
5. 540' Distance of L for 45 MPH with 12' Lane width
6. 660' Distance of L for 55 MPH with 12' Lane width
7. 780' Distance of L for 65 MPH 12' Lane width
8. L Minimum Merging Taper Length
9. 1/2 L Minimum Shifting Taper Length
10. 1/3 L Minimum Shoulder Taper Length
11. 50'-100' regardless of speed One-Lane, Two-Way Taper (Flagger taper) Length and num-
6 devices 10'-20' apart ber of devices
12. 50'-100' per lane Downstream taper Length
13. 2L Tangent distance (between tapers)
14. 1/2L Tangent distance before shifting taper
15. Activity Area Sub-components (3)
1/7
, ATSSA Traffic Control Supervisor Re-certification (missing some basics)
Study online at https://quizlet.com/_4m7ng0
Buffer Space
Work Space
Traffic Space
16. Recovery Area for errant vehi- Longitudinal Buffer Space
cles: Forgiving design
Protects workers and Mo-
torists
Always completely empty or
clear
No vehicles, truck-mounted at-
tenuator, equipment, or materi-
als
STRONGLY RECOMMENDED:
unless there is a documented
reason not to
17. Where road users are returned Termination Area is:
to their normal path
extends from the downstream can contain: (2)
end of the work area to the last
device such as end work zone
sign
May contain:
end work zone sign: usually
500' past last device
downstream taper = 50'-100'
per lane
18. 100' Recommended Advanced Warning Sign Spaceing: Urban
(low speed)
19. 350'
2/7
ATSSA Traffic Control Supervisor Re-certification (missing some basics)
basics)Study
ACTUAL EXAM QUESTIONS WITH COMPLETE SOLUTION
online at https://quizlet.com/_4m7ng0
GUIDE (A+ GRADED 100% VERIFIED) LATEST VERSION 2025!!
1. L=(WS²)/60 for 40MPH or less, Formula for Min. taper length
L=WS for 45MPH or more
2. The off peak 85th percentile. speed used in formulas should be
Which is the speed at or below
which 85% of vehicles travel op-
erating speed in free flow con-
ditions
3. 125' Distance of L for 25 MPH with 12' Lane width
4. 245' Distance of L for 35 MPH with 12' Lane width
5. 540' Distance of L for 45 MPH with 12' Lane width
6. 660' Distance of L for 55 MPH with 12' Lane width
7. 780' Distance of L for 65 MPH 12' Lane width
8. L Minimum Merging Taper Length
9. 1/2 L Minimum Shifting Taper Length
10. 1/3 L Minimum Shoulder Taper Length
11. 50'-100' regardless of speed One-Lane, Two-Way Taper (Flagger taper) Length and num-
6 devices 10'-20' apart ber of devices
12. 50'-100' per lane Downstream taper Length
13. 2L Tangent distance (between tapers)
14. 1/2L Tangent distance before shifting taper
15. Activity Area Sub-components (3)
1/7
, ATSSA Traffic Control Supervisor Re-certification (missing some basics)
Study online at https://quizlet.com/_4m7ng0
Buffer Space
Work Space
Traffic Space
16. Recovery Area for errant vehi- Longitudinal Buffer Space
cles: Forgiving design
Protects workers and Mo-
torists
Always completely empty or
clear
No vehicles, truck-mounted at-
tenuator, equipment, or materi-
als
STRONGLY RECOMMENDED:
unless there is a documented
reason not to
17. Where road users are returned Termination Area is:
to their normal path
extends from the downstream can contain: (2)
end of the work area to the last
device such as end work zone
sign
May contain:
end work zone sign: usually
500' past last device
downstream taper = 50'-100'
per lane
18. 100' Recommended Advanced Warning Sign Spaceing: Urban
(low speed)
19. 350'
2/7
