ATSSA TRAFFIC CONTROL SUPERVISOR EXAM 2025
QUESTIONS WITH ANSWERS RATED A+
✔✔Where road users are returned to their normal path
extends from the downstream 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 - ✔✔Termination Area is:
can contain: (2)
✔✔100' - ✔✔Recommended Advanced Warning Sign Spaceing: Urban (low speed)
✔✔350' - ✔✔Recommended Advanced Warning Sign Spaceing: urban (high speed)
✔✔500' - ✔✔Recommended Advanced Warning Sign Spaceing: Rural
✔✔1000', 1500', and 2640' - ✔✔Recommended Advanced Warning Sign Spaceing:
freeways and expressways (3)
✔✔1 Mile
50%
shoulder at beginning of taper if possible, if not, as close to beginning as possible inside
taper. - ✔✔Arrow board visibility distance by design:
night time dimming:
location:
✔✔taper: not to exceed distance in feet = to posted speed limit
tangent: distance = double posted speed limit - ✔✔device spacing taper:
tangent:
✔✔A: Low intensity flashing
B: High-intensity flashing
C: Steady Burn
D: 360° steady burn - ✔✔Warning lights types:
Type A:
Type B:
Type C:
Type D:
✔✔Uses for portable changeable message sign PCMS - ✔✔speed drops
significant delays
adverse conditions
, advance notice of closures
advance notice of road changes
reinforce static signage
updated guidance information
placed 500'-800' ahead of workzone conflicts or 1.5-2 miles ahead of complex traffic
control
✔✔uses of screens (mounted on top of rail) - ✔✔limit distractions and discourage
rubbernecking
reduce headlight glare from oncoming traffic
reduce floodlight glare from night work
should not be mounted where they reduce motirist visibility and sight distance
✔✔125' 245' 540' 660' 780' - ✔✔Distance of L with 12' Lane Width for:\
25, 35, 45, 55, 65 MPH
✔✔Moved outside the clear zone or be shielded by barrier or crash cushion
placed on the shoulder or further from the traveled lane
delineated with retroreflective material in a continuous line - ✔✔when not in use, where
should a PCMS be?
portable changeable message sign
✔✔1/2 mile visibility day and night - ✔✔how far should a PCMS be visible?
Portable changeable message sign
✔✔*M*anual for
*A*ssessing
*S*afety
*H*ardware
MASH - ✔✔NCHRP 350 rewritten by AASHTO and is now an AASHTO document
called what?
✔✔Temporary Traffic Barriers - ✔✔Portable devices designed to prevent penetration by
vehicles while minimizing injuries to vehicle occupants.
Main function: PROTECTION
Secondary function: CHANNELIZATION
if not needed for protection then it *SHALL NOT BE USED*
✔✔speed, traffic volume / composition, road classification, deflection space, roadway
alignment, sight distance, other factors. - ✔✔Barrier selection guidelines based on
✔✔Barrier deflection - ✔✔the distance a barrier will displace when struck
✔✔portable concrete barriers - ✔✔less expensive for long-term projects, easy to
maintain, reusable, low deflection. Heavy equipment needed for installation.
QUESTIONS WITH ANSWERS RATED A+
✔✔Where road users are returned to their normal path
extends from the downstream 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 - ✔✔Termination Area is:
can contain: (2)
✔✔100' - ✔✔Recommended Advanced Warning Sign Spaceing: Urban (low speed)
✔✔350' - ✔✔Recommended Advanced Warning Sign Spaceing: urban (high speed)
✔✔500' - ✔✔Recommended Advanced Warning Sign Spaceing: Rural
✔✔1000', 1500', and 2640' - ✔✔Recommended Advanced Warning Sign Spaceing:
freeways and expressways (3)
✔✔1 Mile
50%
shoulder at beginning of taper if possible, if not, as close to beginning as possible inside
taper. - ✔✔Arrow board visibility distance by design:
night time dimming:
location:
✔✔taper: not to exceed distance in feet = to posted speed limit
tangent: distance = double posted speed limit - ✔✔device spacing taper:
tangent:
✔✔A: Low intensity flashing
B: High-intensity flashing
C: Steady Burn
D: 360° steady burn - ✔✔Warning lights types:
Type A:
Type B:
Type C:
Type D:
✔✔Uses for portable changeable message sign PCMS - ✔✔speed drops
significant delays
adverse conditions
, advance notice of closures
advance notice of road changes
reinforce static signage
updated guidance information
placed 500'-800' ahead of workzone conflicts or 1.5-2 miles ahead of complex traffic
control
✔✔uses of screens (mounted on top of rail) - ✔✔limit distractions and discourage
rubbernecking
reduce headlight glare from oncoming traffic
reduce floodlight glare from night work
should not be mounted where they reduce motirist visibility and sight distance
✔✔125' 245' 540' 660' 780' - ✔✔Distance of L with 12' Lane Width for:\
25, 35, 45, 55, 65 MPH
✔✔Moved outside the clear zone or be shielded by barrier or crash cushion
placed on the shoulder or further from the traveled lane
delineated with retroreflective material in a continuous line - ✔✔when not in use, where
should a PCMS be?
portable changeable message sign
✔✔1/2 mile visibility day and night - ✔✔how far should a PCMS be visible?
Portable changeable message sign
✔✔*M*anual for
*A*ssessing
*S*afety
*H*ardware
MASH - ✔✔NCHRP 350 rewritten by AASHTO and is now an AASHTO document
called what?
✔✔Temporary Traffic Barriers - ✔✔Portable devices designed to prevent penetration by
vehicles while minimizing injuries to vehicle occupants.
Main function: PROTECTION
Secondary function: CHANNELIZATION
if not needed for protection then it *SHALL NOT BE USED*
✔✔speed, traffic volume / composition, road classification, deflection space, roadway
alignment, sight distance, other factors. - ✔✔Barrier selection guidelines based on
✔✔Barrier deflection - ✔✔the distance a barrier will displace when struck
✔✔portable concrete barriers - ✔✔less expensive for long-term projects, easy to
maintain, reusable, low deflection. Heavy equipment needed for installation.
