IMSA Traffic Signal Technician 2 NEWEST
VERSION 2025 Actual Exam Questions and
Verified Answers
Save
Terms in this set (104)
In a TS2 cabinet, how 1
many times can the MMU
experience a "Port 1 Fail" in
a 24 hour period before
the fault is latched?
On a 2070 MMU monitor Remove diode on program card for allowable phases
unit, how does the field
tech program allowable
phases?
On an MMU, is it possible Yes, it by-passes the conflict feature and will not flash
to tape the reset button to
prevent the traffic signal
from going into flash?
On a NEMA CMU Install copper jumpers and soldering them on the
program card, how does program card
the signal tech program
allowable phases?
According to best Annually
maintenance practices,
how often should
CMU/MMU be tested?
,The MMU indicates a The load switch/switch pack produces no outputs.
RED-FAIL fault on phase 6.
Why?
The purpose of the Controller health
controller CVM
(Controller Voltage
Monitor) output is to allow
the CMU/MMU to
monitor the
When a Technician is Replace the CMU/MMU with a newly tested unit
recertifying the
CMU/MMU at an
intersection, what should
the technician do to have
the intersection exit flash?
Absence of all colors on a Red Fail
load switch will be
indicated by what fault on
an MMU or MMU2?
Which of the following Field check
can be programmed on
an MMU to latch after a
fault occurs?
How often is an MMU's Once a second
clock updated from the
controller?
In a signal cabinet, on the The signal indications don't match the controller
signal monitor, what does output for a phase
a field check indicate?
, A NEMA CMU/MMU uses NEMA monitors have wire jumpers missing in all
a program card to tell the positions, the tech solders the ones in that allow
monitor which phases are phases to run together.
permitted to run together.
Which answer is
CORRECT?
When the controller Traffic Engineer
timings DO NOT match
the timing sheet, who
should be contacted for
correct
times?
An older TS1 cabinet The mercury contactor is stuck in the normal position.
experiences a flash
condition but the signal
heads are also showing
active green, yellow, and
red indications. What is the
MOST COMMON issue?
In a Dual-Ring, 8-phase 1
traffic signal controller,
how many phases can run
in each ring at the same
time?
Observations indicate that Improper detection phase assignment programming
vehicles are being in the controller
detected in one lane and
that this is shown on the
detection interface unit.
However, the controller
does not show any
detection for that phase.
This could be caused by
VERSION 2025 Actual Exam Questions and
Verified Answers
Save
Terms in this set (104)
In a TS2 cabinet, how 1
many times can the MMU
experience a "Port 1 Fail" in
a 24 hour period before
the fault is latched?
On a 2070 MMU monitor Remove diode on program card for allowable phases
unit, how does the field
tech program allowable
phases?
On an MMU, is it possible Yes, it by-passes the conflict feature and will not flash
to tape the reset button to
prevent the traffic signal
from going into flash?
On a NEMA CMU Install copper jumpers and soldering them on the
program card, how does program card
the signal tech program
allowable phases?
According to best Annually
maintenance practices,
how often should
CMU/MMU be tested?
,The MMU indicates a The load switch/switch pack produces no outputs.
RED-FAIL fault on phase 6.
Why?
The purpose of the Controller health
controller CVM
(Controller Voltage
Monitor) output is to allow
the CMU/MMU to
monitor the
When a Technician is Replace the CMU/MMU with a newly tested unit
recertifying the
CMU/MMU at an
intersection, what should
the technician do to have
the intersection exit flash?
Absence of all colors on a Red Fail
load switch will be
indicated by what fault on
an MMU or MMU2?
Which of the following Field check
can be programmed on
an MMU to latch after a
fault occurs?
How often is an MMU's Once a second
clock updated from the
controller?
In a signal cabinet, on the The signal indications don't match the controller
signal monitor, what does output for a phase
a field check indicate?
, A NEMA CMU/MMU uses NEMA monitors have wire jumpers missing in all
a program card to tell the positions, the tech solders the ones in that allow
monitor which phases are phases to run together.
permitted to run together.
Which answer is
CORRECT?
When the controller Traffic Engineer
timings DO NOT match
the timing sheet, who
should be contacted for
correct
times?
An older TS1 cabinet The mercury contactor is stuck in the normal position.
experiences a flash
condition but the signal
heads are also showing
active green, yellow, and
red indications. What is the
MOST COMMON issue?
In a Dual-Ring, 8-phase 1
traffic signal controller,
how many phases can run
in each ring at the same
time?
Observations indicate that Improper detection phase assignment programming
vehicles are being in the controller
detected in one lane and
that this is shown on the
detection interface unit.
However, the controller
does not show any
detection for that phase.
This could be caused by
