IMSA TRAFFIC SIGNAL TECHNICIAN 2 EXAM
QUESTIONS AND CORRECT ANSWERS
When installing a ground rod it MUST BE installed so that the Technician can
obtain an ohm reading of -correct-answer-25 ohm or less.
Logic ground should be -correct-answer-Isolated from cabinet.
What is one of the QUICKEST ways to determine if a piece of electrical
equipment has been burnt by a short or high voltage? -correct-answer-there
will be an odor that can be detected
What is a MAJOR reason for an AC line filter being installed in a cabinet? -
correct- answer-To limit damaging effects of transient noise and other
interference
For the Emergency Vehicle Pre-Emption system, what is the BEST way for the
Tech to test the operation of the system? -correct-answer-Drive the corridor
with a vehicle equipped with an EVP transmitter.
What is the importance of track clearance time in a railroad preemption? -
,correct- answer-It provides the time for vehicles to exit the track area prior to
the gates being lowered.
What is the LAST set of steps a Technician should do after repairing any
pedestrian problems? -correct-answer-Document repairs in log book and
observe the traffic signal operating for several cycles. Ensure that the pedestrian
and vehicle phases are operating per plan.
After a Tech has made a modification to a traffic signal, which of the follow is
the MOST IMPORTANT to complete? -correct-answer-Document in cabinet
log book and on signal intersection schematic.
While in the field, where would an Tech find information about work that has
been performed at a traffic signal intersection? -correct-answer-The cabinet log
book, located inside traffic signal cabinet.
The cabinet has been modified and new detection is added. Where is the MOST
appropriate place to note the additions? -correct-answer-Add details to the log
book noting all the changes
Which of the following documents should a technician check when performing
controller troubleshooting? -correct-answer-Maintenance logs/intersection
drawings/timing charts
, What is the standard used to define how traffic signal controllers and networks
communicate? -correct-answer-National Transportation Communications for
Intelligent Transportation systems (ITS) protocol (NTCIP).
The traffic management center notifies a field tech that the communications to
maple st. And 1st street cuts in and out. The tech arrives at the intersection
finding the modem is overheating and indicator lights are blank. After about
twenty minutes of checking cables, the tech notices the modem is active again
and cool to the touch. The TMC confirms communications are restored. The
tech Checks the log book and finds this problem is a recuring issue. what
should the tech do? -correct-answer-Replace the modem
A managed network switch is being used in the cabinet. What is needed in the
IP programming of the controller to get through the switch and to the TOC? -
correct- answer-Gateway
The pedestrian assembly (pedestrian 6) on the SW corner was damaged in a
traffic accident and the tech cannot repair until the following day. What should
the Tech do until they return to replace the pedestrian assembly? -correct-
answer-Make wiring safe. Bag opposite signal display pedestrian phase (6).
Document in cabinet log book and work order system. Notify supervisor that
they need a pedestrian display assembly and to schedule the installation.
After doing any repairs at a traffic signal which of the following is the MOST
QUESTIONS AND CORRECT ANSWERS
When installing a ground rod it MUST BE installed so that the Technician can
obtain an ohm reading of -correct-answer-25 ohm or less.
Logic ground should be -correct-answer-Isolated from cabinet.
What is one of the QUICKEST ways to determine if a piece of electrical
equipment has been burnt by a short or high voltage? -correct-answer-there
will be an odor that can be detected
What is a MAJOR reason for an AC line filter being installed in a cabinet? -
correct- answer-To limit damaging effects of transient noise and other
interference
For the Emergency Vehicle Pre-Emption system, what is the BEST way for the
Tech to test the operation of the system? -correct-answer-Drive the corridor
with a vehicle equipped with an EVP transmitter.
What is the importance of track clearance time in a railroad preemption? -
,correct- answer-It provides the time for vehicles to exit the track area prior to
the gates being lowered.
What is the LAST set of steps a Technician should do after repairing any
pedestrian problems? -correct-answer-Document repairs in log book and
observe the traffic signal operating for several cycles. Ensure that the pedestrian
and vehicle phases are operating per plan.
After a Tech has made a modification to a traffic signal, which of the follow is
the MOST IMPORTANT to complete? -correct-answer-Document in cabinet
log book and on signal intersection schematic.
While in the field, where would an Tech find information about work that has
been performed at a traffic signal intersection? -correct-answer-The cabinet log
book, located inside traffic signal cabinet.
The cabinet has been modified and new detection is added. Where is the MOST
appropriate place to note the additions? -correct-answer-Add details to the log
book noting all the changes
Which of the following documents should a technician check when performing
controller troubleshooting? -correct-answer-Maintenance logs/intersection
drawings/timing charts
, What is the standard used to define how traffic signal controllers and networks
communicate? -correct-answer-National Transportation Communications for
Intelligent Transportation systems (ITS) protocol (NTCIP).
The traffic management center notifies a field tech that the communications to
maple st. And 1st street cuts in and out. The tech arrives at the intersection
finding the modem is overheating and indicator lights are blank. After about
twenty minutes of checking cables, the tech notices the modem is active again
and cool to the touch. The TMC confirms communications are restored. The
tech Checks the log book and finds this problem is a recuring issue. what
should the tech do? -correct-answer-Replace the modem
A managed network switch is being used in the cabinet. What is needed in the
IP programming of the controller to get through the switch and to the TOC? -
correct- answer-Gateway
The pedestrian assembly (pedestrian 6) on the SW corner was damaged in a
traffic accident and the tech cannot repair until the following day. What should
the Tech do until they return to replace the pedestrian assembly? -correct-
answer-Make wiring safe. Bag opposite signal display pedestrian phase (6).
Document in cabinet log book and work order system. Notify supervisor that
they need a pedestrian display assembly and to schedule the installation.
After doing any repairs at a traffic signal which of the following is the MOST
