IMSA Traffic Signal Technician 2 Questions And
Answers | Latest Update 2026-2027 | Graded A+ |
100% Solved.
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
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
On an MMU, is it possible to tape the reset button to prevent the
traffic signal from going into flash? - ANSWER-Yes, it bypasses
the conflict feature and will not flash
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
,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
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
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
According to best maintenance practices, how often should
CMU/MMU be tested? - ANSWER-Annually
,When the controller timings DO NOT match the timing sheet,
who should be contacted for correct times? - ANSWER-Traffic
Engineer
As soon as vehicles leave the detection zone of an approach that
has met its minimum green time, a signal immediately goes to
yellow from the green display. This could be a result of -
ANSWER-no extension time programmed.
What is one reason the phase interval may change even though
there is still vehicle demand? - ANSWER-maximum green time
has been met
A NEMA CMU/MMU uses a program card to tell the monitor
which phases are permitted to run together. Which answer is
CORRECT? - ANSWERNEMA monitors have wire jumpers
missing in all positions, the tech solders the ones in that allow
phases to run together.
A signal tech is reviewing the controller logs and continually
sees a cycle fault error. What does that mean? - ANSWER-The
CU has not serviced a call in two cycles while in free mode.
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Answers | Latest Update 2026-2027 | Graded A+ |
100% Solved.
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
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
On an MMU, is it possible to tape the reset button to prevent the
traffic signal from going into flash? - ANSWER-Yes, it bypasses
the conflict feature and will not flash
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
,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
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
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
According to best maintenance practices, how often should
CMU/MMU be tested? - ANSWER-Annually
,When the controller timings DO NOT match the timing sheet,
who should be contacted for correct times? - ANSWER-Traffic
Engineer
As soon as vehicles leave the detection zone of an approach that
has met its minimum green time, a signal immediately goes to
yellow from the green display. This could be a result of -
ANSWER-no extension time programmed.
What is one reason the phase interval may change even though
there is still vehicle demand? - ANSWER-maximum green time
has been met
A NEMA CMU/MMU uses a program card to tell the monitor
which phases are permitted to run together. Which answer is
CORRECT? - ANSWERNEMA monitors have wire jumpers
missing in all positions, the tech solders the ones in that allow
phases to run together.
A signal tech is reviewing the controller logs and continually
sees a cycle fault error. What does that mean? - ANSWER-The
CU has not serviced a call in two cycles while in free mode.
, Thank you for Purchasing this exam
Study Guide. We provide high-quality
academic materials to help students
excel in exams. Our other Services
include but not limited to: academic
research, University & College
assignments writing, essay writing,
Online Classes, and research projects.
Our services are reliable, affordable,
and plagiarism-free. All the Best in
your Exam. For more information;
Contact us at:
or
0R +254
741484450
