Traffic Supervisor Test Questions
and Answers
When using reflectors, how high on the barrier wall must then be placed?
A. 36"
B. 20"
C. 26"
D. 24" - Answer-26"
When using glare screens what type sheeting and maximum spacing are used?
A. 50'/type R, Q, Z sheeting
B. 40'/type G, R, Z sheeting
C. 50'/ type G, H, J sheeting
D. 25'/ type H, R, K sheeting - Answer-50'/ type G, H, J sheeting
In transition area, what is the maximum spacing for RPM's on a lane shift or a crossover
on a road that the speed is over 45 mph?
A. 50'
B. 25'
C. 20'
D. 10' - Answer-20'
When is snow plowing season according to ODOT?
A. January-April
B. November-July
C. October-March
D. September-March - Answer-October-March
When placing RPMs along edge lines what is the maximum spacing from outside of the
edge lines?
A. 6"
B. 4"
C. 3"
D. 2" - Answer-4"
Rpm offset along channelizing lines shall be no more than ____ to the left?
,A. 4"
B. 3"
C. 2"
D. 1" - Answer-1"
The alteration between object markers and barriers reflectors is to be what spacing?
A. 50'
B. 40'
C. 30'
D. 25' - Answer-25'
Glare screen shall be designed using a _____ degree cut off angle of the paddle based
on the tangent?
A. 45 degree
B. 30 degree
C. 20 degree
D. 10 degree - Answer-20 degree
What is the portable barrier wall minimum flare rate for 65 mph zone?
A. 12:1
B. 65:1
C. 19:1
D. 8:1 - Answer-19:1
What type of nut goes on hook and loop barrier wall pin?
A. Lock Nut
B. Hexagonal Nut
C. Round Nut
D. None of the above. - Answer-Hexagonal Nut
The recovery area at barrier wall must have a _____ or flatter area and be free of
workers or hazards?
A. 5:1
B. 3:1
C. 2:1
D. 7:1 - Answer-3:1
When using Uneven Lane or Low Shoulder signs, they must be placed ____ feet in
advanced of condition on all intersection's entrances?
A. 500'
,B. 750'
C. 1000'
D. 100' - Answer-750'
What size cone are used for Night Time Zones on the expressway at night?
A. 52"
B. 48"
C. 42"
D. 28" - Answer-42"
What is the size of the opening for an expressway for construction axes point total
opening length _____ at minimum?
A. 750'
B. 900'
C. 600'
D. 100' - Answer-750'
What is the maximum spacing allowed for advanced warning sign if you are unable to
follow the standard spacing?
A. 2x
B. 3x
C. No Change Allowed
D. 1.5x - Answer-1.5x
Are you allowed to use cones for tapers at NIGHT?
A. True
B. False - Answer-False
All cones and drums should have a minimum offset from the edge of the traveled lanes
of ___ ?
A. 3'
B. 4'
C. 2 1/2'
D. 1 1/2' - Answer-1 1/2'
On a divided expressway what is the maximum spacing of drums at 55 mph in the
tangent?
A. 100'
B. 90'
C. 50'
, D. 80' - Answer-80'
On a divided expressway, what is the maximum spacing of drums the tangent for a 70-
mph road?
A. 100
B. 70
C. 120
D. 80 - Answer-120
What is the minimum lane width on an expressway using PCB that must be maintained?
A. 12'
B. 11'
C.10'
D.9' - Answer-10'
What is the minimum shoulder taper rate for 60 mph road?
A. 20:1
B. 17:1
C. 15:1
D. 60:1 - Answer-20:1
What is the minimum buffer length for a 70-mph road?
A. 500'
B. 425'
C. 730'
D. 155' - Answer-730'
How far away does a temporary traffic light need to be from a stop bar on bidirectional
road?
A. 60'
B. 75'
C. 100'
D. 120' - Answer-75'
Photo strobe lights LED warning light must be seen at least _____ away?
A. 100'
B. 200'
C. 1000'
D. 1 mile - Answer-100'
and Answers
When using reflectors, how high on the barrier wall must then be placed?
A. 36"
B. 20"
C. 26"
D. 24" - Answer-26"
When using glare screens what type sheeting and maximum spacing are used?
A. 50'/type R, Q, Z sheeting
B. 40'/type G, R, Z sheeting
C. 50'/ type G, H, J sheeting
D. 25'/ type H, R, K sheeting - Answer-50'/ type G, H, J sheeting
In transition area, what is the maximum spacing for RPM's on a lane shift or a crossover
on a road that the speed is over 45 mph?
A. 50'
B. 25'
C. 20'
D. 10' - Answer-20'
When is snow plowing season according to ODOT?
A. January-April
B. November-July
C. October-March
D. September-March - Answer-October-March
When placing RPMs along edge lines what is the maximum spacing from outside of the
edge lines?
A. 6"
B. 4"
C. 3"
D. 2" - Answer-4"
Rpm offset along channelizing lines shall be no more than ____ to the left?
,A. 4"
B. 3"
C. 2"
D. 1" - Answer-1"
The alteration between object markers and barriers reflectors is to be what spacing?
A. 50'
B. 40'
C. 30'
D. 25' - Answer-25'
Glare screen shall be designed using a _____ degree cut off angle of the paddle based
on the tangent?
A. 45 degree
B. 30 degree
C. 20 degree
D. 10 degree - Answer-20 degree
What is the portable barrier wall minimum flare rate for 65 mph zone?
A. 12:1
B. 65:1
C. 19:1
D. 8:1 - Answer-19:1
What type of nut goes on hook and loop barrier wall pin?
A. Lock Nut
B. Hexagonal Nut
C. Round Nut
D. None of the above. - Answer-Hexagonal Nut
The recovery area at barrier wall must have a _____ or flatter area and be free of
workers or hazards?
A. 5:1
B. 3:1
C. 2:1
D. 7:1 - Answer-3:1
When using Uneven Lane or Low Shoulder signs, they must be placed ____ feet in
advanced of condition on all intersection's entrances?
A. 500'
,B. 750'
C. 1000'
D. 100' - Answer-750'
What size cone are used for Night Time Zones on the expressway at night?
A. 52"
B. 48"
C. 42"
D. 28" - Answer-42"
What is the size of the opening for an expressway for construction axes point total
opening length _____ at minimum?
A. 750'
B. 900'
C. 600'
D. 100' - Answer-750'
What is the maximum spacing allowed for advanced warning sign if you are unable to
follow the standard spacing?
A. 2x
B. 3x
C. No Change Allowed
D. 1.5x - Answer-1.5x
Are you allowed to use cones for tapers at NIGHT?
A. True
B. False - Answer-False
All cones and drums should have a minimum offset from the edge of the traveled lanes
of ___ ?
A. 3'
B. 4'
C. 2 1/2'
D. 1 1/2' - Answer-1 1/2'
On a divided expressway what is the maximum spacing of drums at 55 mph in the
tangent?
A. 100'
B. 90'
C. 50'
, D. 80' - Answer-80'
On a divided expressway, what is the maximum spacing of drums the tangent for a 70-
mph road?
A. 100
B. 70
C. 120
D. 80 - Answer-120
What is the minimum lane width on an expressway using PCB that must be maintained?
A. 12'
B. 11'
C.10'
D.9' - Answer-10'
What is the minimum shoulder taper rate for 60 mph road?
A. 20:1
B. 17:1
C. 15:1
D. 60:1 - Answer-20:1
What is the minimum buffer length for a 70-mph road?
A. 500'
B. 425'
C. 730'
D. 155' - Answer-730'
How far away does a temporary traffic light need to be from a stop bar on bidirectional
road?
A. 60'
B. 75'
C. 100'
D. 120' - Answer-75'
Photo strobe lights LED warning light must be seen at least _____ away?
A. 100'
B. 200'
C. 1000'
D. 1 mile - Answer-100'
