Traffic Supervisor Exam/ 338 Questions with
Certified Solutions.
Is a shadow vehicle used in all traffic zones?
A. True
B. False - Answer: False
The shadow vehicle is occupied whenever workers are in the work area.
A. True
B. False - Answer: False
What class one light is the shadow vehicle equipped with?
A. Flashing Yellow Light
B. Oscillating Yellow Light
C. Yellow Strobe Light
D. All of the above - Answer: All of the above
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,When may cones be substituted for drums?
A. Daytime traffic control minimum height 18"
B. Daytime traffic control minimum height 28"
C. Daytime traffic control minimum height 36"
D. Daytime traffic control minimum height 42" - Answer: Daytime traffic control minimum
height 28"
Post mounted signs used in a rural area must be how far from the edge of the road?
A. 5' to 6'
B. 5' to 12'
C. 2' to 7'
D. 6' to 12' - Answer: 6' to 12'
Which description would best fit regularity signs?
A. They are used to warn motorist of hazard.
B. They are always diamond shaped.
C. They are used to inform motorists of traffic laws.
D. They may be red and white or orange and black. - Answer: They are used to inform motorists
of traffic laws.
Who may approve the use of regulatory signs?
A. The project superintendent.
B. The public agency with jurisdiction over the project.
C. The local law enforcement officials.
D. They require no special approval. - Answer: The public agency with jurisdiction over the
project.
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,What are the two approved sizes for diamond shaped warning signs?
A. 36" and 54"
B. 28" and 48"
C. 24" and 36"
D. 36" and 48" - Answer: 36" and 48"
Which description would best fit guide signs?
A. They provide motorists with information to help them through a work zone.
B. They warn motorists of hazard.
C. They provide information on places of interest.
D. They provide motorists information on the local traffic laws. - Answer: They provide
motorists with information to help them through a work zone.
Which of the following best describes the main function of flashing arrow panels?
A. They pint motorists to the exit ramp.
B. They direct motorists to merge out of a closed lane.
C. They direct motorists around a detour route.
D. They warn motorist of a hazard. - Answer: They direct motorists to merge out of a closed
lane.
How must all channelizing devices with the exception of barricades and concrete barriers be
constructed?
A. So that they do not require any external ballast.
B. To be as sturdy as possible to deflect errant vehicles.
C. So that they perform in a predictable manner when struck by a vehicle.
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, D. So they will bounce back into position even if hit with a truck. - Answer: So that they perform
in a predictable manner when struck by a vehicle.
Which size of cone is restricted to use on low speed, low volume roads?
A. 36" cones
B. 48" cones
C. 28" cones
D.18" cones - Answer: 18" cones
For what reason might you opt to use vertical panels in place of cones or drums?
A. They are more visible to motorists.
B. They provide a more substantial barrier when separating two opposing lanes of traffic.
C. They are more suitable when space is restricted.
D. They should never be used in place of cones or drums. - Answer: They are more suitable
when space is restricted.
When should concrete barriers be used to create a merging taper on an expressway?
A. When there is a high volume of truck traffic.
B. When the project will take over two months to complete.
C. When workers are working very close to the road.
D. Concrete barriers should never be used to create a merging taper on an expressway. -
Answer: Concrete barriers should never be used to create a merging taper on an expressway.
Which type of project will require temporary pavement markings?
A. Mobile operations
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Certified Solutions.
Is a shadow vehicle used in all traffic zones?
A. True
B. False - Answer: False
The shadow vehicle is occupied whenever workers are in the work area.
A. True
B. False - Answer: False
What class one light is the shadow vehicle equipped with?
A. Flashing Yellow Light
B. Oscillating Yellow Light
C. Yellow Strobe Light
D. All of the above - Answer: All of the above
Page 1 of 65
,When may cones be substituted for drums?
A. Daytime traffic control minimum height 18"
B. Daytime traffic control minimum height 28"
C. Daytime traffic control minimum height 36"
D. Daytime traffic control minimum height 42" - Answer: Daytime traffic control minimum
height 28"
Post mounted signs used in a rural area must be how far from the edge of the road?
A. 5' to 6'
B. 5' to 12'
C. 2' to 7'
D. 6' to 12' - Answer: 6' to 12'
Which description would best fit regularity signs?
A. They are used to warn motorist of hazard.
B. They are always diamond shaped.
C. They are used to inform motorists of traffic laws.
D. They may be red and white or orange and black. - Answer: They are used to inform motorists
of traffic laws.
Who may approve the use of regulatory signs?
A. The project superintendent.
B. The public agency with jurisdiction over the project.
C. The local law enforcement officials.
D. They require no special approval. - Answer: The public agency with jurisdiction over the
project.
Page 2 of 65
,What are the two approved sizes for diamond shaped warning signs?
A. 36" and 54"
B. 28" and 48"
C. 24" and 36"
D. 36" and 48" - Answer: 36" and 48"
Which description would best fit guide signs?
A. They provide motorists with information to help them through a work zone.
B. They warn motorists of hazard.
C. They provide information on places of interest.
D. They provide motorists information on the local traffic laws. - Answer: They provide
motorists with information to help them through a work zone.
Which of the following best describes the main function of flashing arrow panels?
A. They pint motorists to the exit ramp.
B. They direct motorists to merge out of a closed lane.
C. They direct motorists around a detour route.
D. They warn motorist of a hazard. - Answer: They direct motorists to merge out of a closed
lane.
How must all channelizing devices with the exception of barricades and concrete barriers be
constructed?
A. So that they do not require any external ballast.
B. To be as sturdy as possible to deflect errant vehicles.
C. So that they perform in a predictable manner when struck by a vehicle.
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, D. So they will bounce back into position even if hit with a truck. - Answer: So that they perform
in a predictable manner when struck by a vehicle.
Which size of cone is restricted to use on low speed, low volume roads?
A. 36" cones
B. 48" cones
C. 28" cones
D.18" cones - Answer: 18" cones
For what reason might you opt to use vertical panels in place of cones or drums?
A. They are more visible to motorists.
B. They provide a more substantial barrier when separating two opposing lanes of traffic.
C. They are more suitable when space is restricted.
D. They should never be used in place of cones or drums. - Answer: They are more suitable
when space is restricted.
When should concrete barriers be used to create a merging taper on an expressway?
A. When there is a high volume of truck traffic.
B. When the project will take over two months to complete.
C. When workers are working very close to the road.
D. Concrete barriers should never be used to create a merging taper on an expressway. -
Answer: Concrete barriers should never be used to create a merging taper on an expressway.
Which type of project will require temporary pavement markings?
A. Mobile operations
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