IMSA Traffic Signal Technician 2 Exam |
Questions and Answers Rated A+ |
Latest Update 2025/2026
During scheduled preventative maintenance the Tech observes that the
catenary wire is cut next to a street sign on a span wire. What should the
tech do? - Correct Answer - Install a Strandvice inline of catenary wire,
and make a note in the work order for management to schedule
replacement of catenary wire.
After a trouble call, the tech observes that the catenary 9/16" strandvise
at the concrete pole is broken. What should the tech do? - Correct
Answer - Using a come along, loosen the 9/16" wire then remove the
broken 9/16" strandvise. Install the new 9/16" strandvise onto the eyebolt
on the pole than pull the 9/16" catenary steel wire through the strandvise
and release the tension on the come along slowly.
When replacing a signal head, what is NOT important? - Correct Answer
- Manufacturer of signal.
How does the technician know that signal poles are installed in the
correct locations? - Correct Answer - Check the intersection
schematics/drawings.
,Glancing at the cabinet wiring schematic, how can a technician know
they are working in a NEMA TS-1 8 phase cabinet? - Correct Answer -
Controller is connected to cabinet wiring using 3-4 multiwire connectors.
What is the BEST test instrument to assist the Tech for locating bad fiber
optic splices or cut fiber optic cables in the field? - Correct Answer -
Optical Time Domain Reflectometer (OTDR)
What testing device would a tech use to verify continuity of a detector
home run cable? - Correct Answer - Multimeter.
What is a way to verify the UPS has been connected and is operating
properly? - Correct Answer - Turn off the main breaker at the electric
service disconnect.
During inspection of the UPS connected at the traffic signal, the tech
notices one of four batteries has expanded and bubbled. What is the
recommended response? - Correct Answer - Test other batteries, and
replace the expanded bubbled battery along with other failing batteries.
Which of the following MUST be done after changing the UPS batteries?
- Correct Answer - Document initial battery voltages and work done in
the traffic signal cabinet log book.
, What should you do if the signal indications do not function properly after
replacing the faulty signals? - Correct Answer - Review cabinet
blueprints to verify the wiring method.
In a NEMA TS1 cabinet, a loop detector provides a call or input to the
controller by providing - Correct Answer - 12 VDC to the controller on the
input pin
Which statement does NOT include a step to evaluate detection inputs
to the controller? - Correct Answer - Perform a "one-call" to check for
any utilities located underground.
An approach has four signal heads for the through lanes, three overhead
and one on the corner. In a cabinet without load resistors, how many
reds have to fail before the CMU/MMU in the cabinet puts the cabinet in
flash? - Correct Answer - 3
Which alternative below presents a correct action to inspect a pedestrian
actuation? - Correct Answer - Use multimeter to verify voltage and
continuity of wiring connected to the push button.
While visible solder bubbles are acceptable in soldering joints, we should
re-solder if there is any soldering leaking through the jumper board. -
Correct Answer - False
Questions and Answers Rated A+ |
Latest Update 2025/2026
During scheduled preventative maintenance the Tech observes that the
catenary wire is cut next to a street sign on a span wire. What should the
tech do? - Correct Answer - Install a Strandvice inline of catenary wire,
and make a note in the work order for management to schedule
replacement of catenary wire.
After a trouble call, the tech observes that the catenary 9/16" strandvise
at the concrete pole is broken. What should the tech do? - Correct
Answer - Using a come along, loosen the 9/16" wire then remove the
broken 9/16" strandvise. Install the new 9/16" strandvise onto the eyebolt
on the pole than pull the 9/16" catenary steel wire through the strandvise
and release the tension on the come along slowly.
When replacing a signal head, what is NOT important? - Correct Answer
- Manufacturer of signal.
How does the technician know that signal poles are installed in the
correct locations? - Correct Answer - Check the intersection
schematics/drawings.
,Glancing at the cabinet wiring schematic, how can a technician know
they are working in a NEMA TS-1 8 phase cabinet? - Correct Answer -
Controller is connected to cabinet wiring using 3-4 multiwire connectors.
What is the BEST test instrument to assist the Tech for locating bad fiber
optic splices or cut fiber optic cables in the field? - Correct Answer -
Optical Time Domain Reflectometer (OTDR)
What testing device would a tech use to verify continuity of a detector
home run cable? - Correct Answer - Multimeter.
What is a way to verify the UPS has been connected and is operating
properly? - Correct Answer - Turn off the main breaker at the electric
service disconnect.
During inspection of the UPS connected at the traffic signal, the tech
notices one of four batteries has expanded and bubbled. What is the
recommended response? - Correct Answer - Test other batteries, and
replace the expanded bubbled battery along with other failing batteries.
Which of the following MUST be done after changing the UPS batteries?
- Correct Answer - Document initial battery voltages and work done in
the traffic signal cabinet log book.
, What should you do if the signal indications do not function properly after
replacing the faulty signals? - Correct Answer - Review cabinet
blueprints to verify the wiring method.
In a NEMA TS1 cabinet, a loop detector provides a call or input to the
controller by providing - Correct Answer - 12 VDC to the controller on the
input pin
Which statement does NOT include a step to evaluate detection inputs
to the controller? - Correct Answer - Perform a "one-call" to check for
any utilities located underground.
An approach has four signal heads for the through lanes, three overhead
and one on the corner. In a cabinet without load resistors, how many
reds have to fail before the CMU/MMU in the cabinet puts the cabinet in
flash? - Correct Answer - 3
Which alternative below presents a correct action to inspect a pedestrian
actuation? - Correct Answer - Use multimeter to verify voltage and
continuity of wiring connected to the push button.
While visible solder bubbles are acceptable in soldering joints, we should
re-solder if there is any soldering leaking through the jumper board. -
Correct Answer - False
