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IMSA TRAFFIC SIGNAL TECHNICIAN 2 EXAM NEWEST 2025/2026
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
What testing device would a tech use to verify continuity of a
detector home run cable? - ANSWER-Multimeter.
What is a way to verify the UPS has been connected and is
operating properly? - ANSWER-Turn off the main breaker at the
electric service disconnect.
In a TS2 cabinet, how many times can the MMU experience a
"Port 1 Fail" in a 24 hour period before
the fault is latched? - ANSWER-1
On a 2070 MMU monitor unit, how does the field tech program
allowable phases? - ANSWER-Remove diode on program card
for allowable phases
On an MMU, is it possible to tape the reset button to prevent the
traffic signal from going into flash? - ANSWER-Yes, it by-passes
the conflict feature and will not flash
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On a NEMA CMU program card, how does the signal tech
program allowable phases? - ANSWER-Install copper jumpers
and soldering them on the program card
According to best maintenance practices, how often should
CMU/MMU be tested? - ANSWER-Annually
The MMU indicates a RED-FAIL fault on phase 6. Why? -
ANSWER-The load switch/switch pack produces no outputs.
The purpose of the controller CVM (Controller Voltage Monitor)
output is to allow the CMU/MMU to
monitor the - ANSWER-Controller health
When a Technician is recertifying the CMU/MMU at an
intersection, what should the technician do to have the
intersection exit flash? - ANSWER-Replace the CMU/MMU with a
newly tested unit
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Absence of all colors on a load switch will be indicated by what
fault on an MMU or MMU2? - ANSWER-Red Fail
Which of the following can be programmed on an MMU to latch
after a fault occurs? - ANSWER-Field check
How often is an MMU's clock updated from the controller? -
ANSWER-Once a second
In a signal cabinet, on the signal monitor, what does a field check
indicate? - ANSWER-The signal indications don't match the
controller output for a phase
A NEMA CMU/MMU uses a program card to tell the monitor which
phases are permitted to run together. Which answer is
CORRECT? - ANSWER-NEMA monitors have wire jumpers
missing in all positions, the tech solders the ones in that allow
phases to run together.
IMSA TRAFFIC SIGNAL TECHNICIAN 2 EXAM NEWEST 2025/2026
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
What testing device would a tech use to verify continuity of a
detector home run cable? - ANSWER-Multimeter.
What is a way to verify the UPS has been connected and is
operating properly? - ANSWER-Turn off the main breaker at the
electric service disconnect.
In a TS2 cabinet, how many times can the MMU experience a
"Port 1 Fail" in a 24 hour period before
the fault is latched? - ANSWER-1
On a 2070 MMU monitor unit, how does the field tech program
allowable phases? - ANSWER-Remove diode on program card
for allowable phases
On an MMU, is it possible to tape the reset button to prevent the
traffic signal from going into flash? - ANSWER-Yes, it by-passes
the conflict feature and will not flash
,2|Page
On a NEMA CMU program card, how does the signal tech
program allowable phases? - ANSWER-Install copper jumpers
and soldering them on the program card
According to best maintenance practices, how often should
CMU/MMU be tested? - ANSWER-Annually
The MMU indicates a RED-FAIL fault on phase 6. Why? -
ANSWER-The load switch/switch pack produces no outputs.
The purpose of the controller CVM (Controller Voltage Monitor)
output is to allow the CMU/MMU to
monitor the - ANSWER-Controller health
When a Technician is recertifying the CMU/MMU at an
intersection, what should the technician do to have the
intersection exit flash? - ANSWER-Replace the CMU/MMU with a
newly tested unit
, 3|Page
Absence of all colors on a load switch will be indicated by what
fault on an MMU or MMU2? - ANSWER-Red Fail
Which of the following can be programmed on an MMU to latch
after a fault occurs? - ANSWER-Field check
How often is an MMU's clock updated from the controller? -
ANSWER-Once a second
In a signal cabinet, on the signal monitor, what does a field check
indicate? - ANSWER-The signal indications don't match the
controller output for a phase
A NEMA CMU/MMU uses a program card to tell the monitor which
phases are permitted to run together. Which answer is
CORRECT? - ANSWER-NEMA monitors have wire jumpers
missing in all positions, the tech solders the ones in that allow
phases to run together.
