TRAFFIC SUPERVISOR EXAM (2026) UPDATE VERIFIED QUESTIONS
AND ANSWERS
Is a shadow vehicle used in all traffic zones?
A. True
B. False - CORRECT ANSWER✅✅False
The shadow vehicle is occupied whenever workers are in the work area.
A. True
B. False - CORRECT 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 - CORRECT ANSWER✅✅All of the above
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" - CORRECT ANSWER✅✅Daytime traffic control
minimum height 28"
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" - CORRECT ANSWER✅✅Daytime traffic control
minimum height 28"
,When cones are substituted for drums for nighttime closers, what is the minimum cone height
requirement?
A. 18"
B. 28"
C. 36"
D. 42" - CORRECT ANSWER✅✅42"
When cones are substituted for drums at nighttime closer, what is the maximum cone spacing?
A. 20'
B. 30'
C. 40'
D. 50' - CORRECT ANSWER✅✅40'
What type of flashing warning lights are required when there is a nighttime lane closer?
A. ROAD WORK AHEAD
B. LANE CLOSED AHEAD
C. A & B
D. NONE OF THE ABOVE - CORRECT ANSWER✅✅ROAD WORK AHEAD
&
LANE CLOSED AHEAD
If there is a lane closure of greater than three days, what is required?
A. Work zone dotted lines, 4' in length separated by 10' gaps, shall be provided to identify the merge.
B. The appropriate color work zone edge lines shall be applied along the taper and tangent sections.
C. All the above
D. None of the above - CORRECT ANSWER✅✅The appropriate color work zone edge lines shall be
applied along the taper and tangent sections.
,Work zone pavement marking that conflict with final traffic lanes shall be temporary paint.
A. True
B. False - CORRECT ANSWER✅✅False
What are the extra advance warning signs?
A. Lane Close Ahead
B. Watch for Stopped Traffic
C. Road Work Ahead
D. All the above - CORRECT ANSWER✅✅Lane Change Ahead
&
Watch for Stopped Traffic
&
Road Work Ahead
Is the advisory speed plaque used in all traffic zones?
A. True
B. False - CORRECT ANSWER✅✅False
When the approach speed limit is 40 mph or less, 36" warning signs may be used.
A. True
B. False - CORRECT ANSWER✅✅True
Road Work Ahead signs shall be provided on entrance ramps or roadways entering the work limits.
A. True
B. False - CORRECT ANSWER✅✅True
End Road Work signs are only required for lane closures of more than ______ day.
A. 1
, B. 2
C. 3
D 4 - CORRECT ANSWER✅✅1
Sign spacing should be adjusted to avoid conflict with existing signs, minimum spacing to existing signs
shall be 200' for speeds of 45 mph or less and a minimum of 400' for speeds 50 mph or greater.
A. True
B. False - CORRECT ANSWER✅✅True
The minimum acceptable length for the merge taper shall be determined by _________ the width of the
offset by the merge taper rate.
A. Subtracting
B. Adding
C. Divide
D. Multiplying - CORRECT ANSWER✅✅Multiplying
The tangent (recovery area) section between the two merge tapers should be 2 times longer of the two
merge tapers.
A. True
B. False - CORRECT ANSWER✅✅True
What is a fundamental principle of temporary traffic control?
A. To inconvenience motorists as much as possible so they will find another route.
B. To guide and direct motorists through or around the work area as efficiently as possible.
C. To make traffic move as slow as possible.
D. All of the above are fundamental principles. - CORRECT ANSWER✅✅To guide and direct motorists
through or around the work area as efficiently as possible.
What needs to be done when work is suspended for any length of time?
A. Take down the ROAD WORK AHEAD sign
AND ANSWERS
Is a shadow vehicle used in all traffic zones?
A. True
B. False - CORRECT ANSWER✅✅False
The shadow vehicle is occupied whenever workers are in the work area.
A. True
B. False - CORRECT 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 - CORRECT ANSWER✅✅All of the above
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" - CORRECT ANSWER✅✅Daytime traffic control
minimum height 28"
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" - CORRECT ANSWER✅✅Daytime traffic control
minimum height 28"
,When cones are substituted for drums for nighttime closers, what is the minimum cone height
requirement?
A. 18"
B. 28"
C. 36"
D. 42" - CORRECT ANSWER✅✅42"
When cones are substituted for drums at nighttime closer, what is the maximum cone spacing?
A. 20'
B. 30'
C. 40'
D. 50' - CORRECT ANSWER✅✅40'
What type of flashing warning lights are required when there is a nighttime lane closer?
A. ROAD WORK AHEAD
B. LANE CLOSED AHEAD
C. A & B
D. NONE OF THE ABOVE - CORRECT ANSWER✅✅ROAD WORK AHEAD
&
LANE CLOSED AHEAD
If there is a lane closure of greater than three days, what is required?
A. Work zone dotted lines, 4' in length separated by 10' gaps, shall be provided to identify the merge.
B. The appropriate color work zone edge lines shall be applied along the taper and tangent sections.
C. All the above
D. None of the above - CORRECT ANSWER✅✅The appropriate color work zone edge lines shall be
applied along the taper and tangent sections.
,Work zone pavement marking that conflict with final traffic lanes shall be temporary paint.
A. True
B. False - CORRECT ANSWER✅✅False
What are the extra advance warning signs?
A. Lane Close Ahead
B. Watch for Stopped Traffic
C. Road Work Ahead
D. All the above - CORRECT ANSWER✅✅Lane Change Ahead
&
Watch for Stopped Traffic
&
Road Work Ahead
Is the advisory speed plaque used in all traffic zones?
A. True
B. False - CORRECT ANSWER✅✅False
When the approach speed limit is 40 mph or less, 36" warning signs may be used.
A. True
B. False - CORRECT ANSWER✅✅True
Road Work Ahead signs shall be provided on entrance ramps or roadways entering the work limits.
A. True
B. False - CORRECT ANSWER✅✅True
End Road Work signs are only required for lane closures of more than ______ day.
A. 1
, B. 2
C. 3
D 4 - CORRECT ANSWER✅✅1
Sign spacing should be adjusted to avoid conflict with existing signs, minimum spacing to existing signs
shall be 200' for speeds of 45 mph or less and a minimum of 400' for speeds 50 mph or greater.
A. True
B. False - CORRECT ANSWER✅✅True
The minimum acceptable length for the merge taper shall be determined by _________ the width of the
offset by the merge taper rate.
A. Subtracting
B. Adding
C. Divide
D. Multiplying - CORRECT ANSWER✅✅Multiplying
The tangent (recovery area) section between the two merge tapers should be 2 times longer of the two
merge tapers.
A. True
B. False - CORRECT ANSWER✅✅True
What is a fundamental principle of temporary traffic control?
A. To inconvenience motorists as much as possible so they will find another route.
B. To guide and direct motorists through or around the work area as efficiently as possible.
C. To make traffic move as slow as possible.
D. All of the above are fundamental principles. - CORRECT ANSWER✅✅To guide and direct motorists
through or around the work area as efficiently as possible.
What needs to be done when work is suspended for any length of time?
A. Take down the ROAD WORK AHEAD sign
