Traffic Signal Maintenance & Installation
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What is used to adjust the final installation of a mast arm pole? -
Correct Answer: Leveling nuts
2. What should be ensured through routine visual observation on poles? -
Correct Answer: Structural integrity of the pole
3. What traffic control devices must be deployed at a minimum when closing a
lane for maintenance? - Correct Answer: Traffic Cones
4. Which activity may not require a temporary work zone? - Correct
Answer: Maintaining a cabinet
5. What is the approximate mounting height of a pedestrian push button
above the sidewalk? - Correct Answer: 3.5-4 feet
6. What is the minimum horizontal distance that signal heads may be installed
as per the MUTCD? - Correct Answer: 8 feet
,7. What must a signal technician do if pedestrian push buttons on the signal
pole are prohibited? - Correct Answer: Place the affected phases on
recall
8. What should deactivate blank out signs at a light rail train crossing display? -
Correct Answer: A blank face
9. How can a signal technician determine the routing of underground traffic
signal cables? - Correct Answer: From the traffic signal design As-Built
plans
10.How can the thermostat be tested during maintenance? - Correct
Answer: Measure the voltage for 24 VAC with a multimeter
11.What is the best way to ensure cables are labeled correctly before attaching
field wires? - Correct Answer: Trace each wire to the correct head
12.How should a signal technician verify all pedestrian detectors and signal
displays are connected correctly during PM? - Correct Answer: Activate
each individual pedestrian detector test switch in cabinet
13.What should be checked when verifying pedestrian push button
operations? - Correct Answer: Each button separately to ensure no
other button for the phase has been activated
,14.What device is used for limiting visibility of the traffic signal head? -
Correct Answer: Signal Louver
15.What should loop homerun cables have? - Correct Answer: Twisted
pairs that are shielded with a drain wire
16.What is the fastest way for a signal technician to verify that an EVP input is
getting into the controller? - Correct Answer: Put a call in from the EVP
detector card
17.How should two 6' x 40' rectangular loops serving phase five be connected?
- Correct Answer: In parallel
18.When must a signal technician establish a temporary work zone for
maintenance on school zone flasher? - Correct Answer: When a bucket
truck is parked on the road and impedes traffic
19.What causes multiple rings in a controller to operate concurrently? -
Correct Answer: A barrier
20.How can the alignment of an overhead camera be verified? - Correct
Answer: Using the detection system software and setup application
21.What is a good annual practice for signal maintenance? - Correct
Answer: Lubricate locks and hinges
, 22.What is the most likely cause of an internally illuminated sign cycling during
nighttime operation? - Correct Answer: A photocell
23.What piece of PPE is required while working overhead in a bucket truck? -
Correct Answer: Safety harness
24.How many degrees of bend are allowed for a single run of conduit as per
the NEC? - Correct Answer: 360 degrees
25.What should be done when a pedestrian push button is not entering calls? -
Correct Answer: Place the affected phase on ped recall
26.How many vehicle phases does a single ring, as originally defined by NEMA,
have? - Correct Answer: 4
27.What should the resistance of a ground rod to ground rod never exceed as
per the NEC? - Correct Answer: 25 ohms
28.What type of mounting hardware for signal heads is considered rigid? -
Correct Answer: Astro-Brac style
29.How can a signal technician safely splice a new signal head into a live
circuit? - Correct Answer: By using dielectric tools
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What is used to adjust the final installation of a mast arm pole? -
Correct Answer: Leveling nuts
2. What should be ensured through routine visual observation on poles? -
Correct Answer: Structural integrity of the pole
3. What traffic control devices must be deployed at a minimum when closing a
lane for maintenance? - Correct Answer: Traffic Cones
4. Which activity may not require a temporary work zone? - Correct
Answer: Maintaining a cabinet
5. What is the approximate mounting height of a pedestrian push button
above the sidewalk? - Correct Answer: 3.5-4 feet
6. What is the minimum horizontal distance that signal heads may be installed
as per the MUTCD? - Correct Answer: 8 feet
,7. What must a signal technician do if pedestrian push buttons on the signal
pole are prohibited? - Correct Answer: Place the affected phases on
recall
8. What should deactivate blank out signs at a light rail train crossing display? -
Correct Answer: A blank face
9. How can a signal technician determine the routing of underground traffic
signal cables? - Correct Answer: From the traffic signal design As-Built
plans
10.How can the thermostat be tested during maintenance? - Correct
Answer: Measure the voltage for 24 VAC with a multimeter
11.What is the best way to ensure cables are labeled correctly before attaching
field wires? - Correct Answer: Trace each wire to the correct head
12.How should a signal technician verify all pedestrian detectors and signal
displays are connected correctly during PM? - Correct Answer: Activate
each individual pedestrian detector test switch in cabinet
13.What should be checked when verifying pedestrian push button
operations? - Correct Answer: Each button separately to ensure no
other button for the phase has been activated
,14.What device is used for limiting visibility of the traffic signal head? -
Correct Answer: Signal Louver
15.What should loop homerun cables have? - Correct Answer: Twisted
pairs that are shielded with a drain wire
16.What is the fastest way for a signal technician to verify that an EVP input is
getting into the controller? - Correct Answer: Put a call in from the EVP
detector card
17.How should two 6' x 40' rectangular loops serving phase five be connected?
- Correct Answer: In parallel
18.When must a signal technician establish a temporary work zone for
maintenance on school zone flasher? - Correct Answer: When a bucket
truck is parked on the road and impedes traffic
19.What causes multiple rings in a controller to operate concurrently? -
Correct Answer: A barrier
20.How can the alignment of an overhead camera be verified? - Correct
Answer: Using the detection system software and setup application
21.What is a good annual practice for signal maintenance? - Correct
Answer: Lubricate locks and hinges
, 22.What is the most likely cause of an internally illuminated sign cycling during
nighttime operation? - Correct Answer: A photocell
23.What piece of PPE is required while working overhead in a bucket truck? -
Correct Answer: Safety harness
24.How many degrees of bend are allowed for a single run of conduit as per
the NEC? - Correct Answer: 360 degrees
25.What should be done when a pedestrian push button is not entering calls? -
Correct Answer: Place the affected phase on ped recall
26.How many vehicle phases does a single ring, as originally defined by NEMA,
have? - Correct Answer: 4
27.What should the resistance of a ground rod to ground rod never exceed as
per the NEC? - Correct Answer: 25 ohms
28.What type of mounting hardware for signal heads is considered rigid? -
Correct Answer: Astro-Brac style
29.How can a signal technician safely splice a new signal head into a live
circuit? - Correct Answer: By using dielectric tools
