IMSA TRAFFIC SIGNAL TECHNICIAN 2 EXAM 2026 UPDATE &
VERIFIED ELABORATIONS
Equations?
Length of intersection divided by 3.5 f/s (1m/s)
What is the BEST way to observe proper pedestrian push
button activation?
Walk the intersection and push each button and observe the
response
According to the NEC(National Electrical Code), GREEN wires
in the traffic signal cabinet are only to
Be used for
Earth ground within the signal cabinet
After connecting the phase (2) NB through movement's loops
to the vehicle detection board in the traffic signal, what should
be verified?
That the NB through detection is placing calls on Phase (2) in
the controller.
,Which observations for failed loop detection will indicate a
field problem?
A failed continuity test
What equipment is NOT used in troubleshooting a video
detection system?
Lightmeter
What happens when a vehicle parks in a detector zone at an
intersection using non-intrusive detection?
The detection system learns to remove the effect of the parked
vehicle.
Two adjacent lanes each have loop detectors which are
connected to one channel of detection. Observations indicate
that vehicles are not being detected in one lane. This could be
Caused by
A damaged loop connected in parallel.
Which of the following terms is used to describe when two
loop fields interact with each other in an adverse way?
Cross-talking
, Adding turns to a loop
Increases the inductance
Which detection systems typically cannot be used for
pedestrian detection?
Loops
What is the BEST way to determine if a loop wire's insulation
has failed?
Visual Inspection
When installing a ground rod it MUST BE installed so that the
Technician can obtain an ohm reading of
25 ohm or less.
Logic ground should be
Isolated from cabinet.
VERIFIED ELABORATIONS
Equations?
Length of intersection divided by 3.5 f/s (1m/s)
What is the BEST way to observe proper pedestrian push
button activation?
Walk the intersection and push each button and observe the
response
According to the NEC(National Electrical Code), GREEN wires
in the traffic signal cabinet are only to
Be used for
Earth ground within the signal cabinet
After connecting the phase (2) NB through movement's loops
to the vehicle detection board in the traffic signal, what should
be verified?
That the NB through detection is placing calls on Phase (2) in
the controller.
,Which observations for failed loop detection will indicate a
field problem?
A failed continuity test
What equipment is NOT used in troubleshooting a video
detection system?
Lightmeter
What happens when a vehicle parks in a detector zone at an
intersection using non-intrusive detection?
The detection system learns to remove the effect of the parked
vehicle.
Two adjacent lanes each have loop detectors which are
connected to one channel of detection. Observations indicate
that vehicles are not being detected in one lane. This could be
Caused by
A damaged loop connected in parallel.
Which of the following terms is used to describe when two
loop fields interact with each other in an adverse way?
Cross-talking
, Adding turns to a loop
Increases the inductance
Which detection systems typically cannot be used for
pedestrian detection?
Loops
What is the BEST way to determine if a loop wire's insulation
has failed?
Visual Inspection
When installing a ground rod it MUST BE installed so that the
Technician can obtain an ohm reading of
25 ohm or less.
Logic ground should be
Isolated from cabinet.
