Traffic Signal Technician Level 1
Questions and Correct Answers 2025-
2026 Graded A
A 6' x 60' loop typically has how many turns of wire: - ANS two
a Circuit that is wired in Parallel is one where: - ANS each component has
its own direct path.
a Circuit that is wired in series is one where: - ANSthe current goes through
all of the electrical components of the circuit
a command that forces the traffic signal controller to end the green display
for an actuated phase - ANSforce off
a difference between NEMA cabinets and 170 cabinets is NEMA cabinets -
ANSrequire connection with harnesses pre-wired into the cabinet.
a disadvantage of video detection systems is: - ANSmay involve a higher
initial installation cost
A good nice step procedure for troubleshooting is: - ANSobserve, identify,
determine, correct, observe again
a hybrid system combines - ANSclosed loop systems with central computer
systems
1
,A Key component of documentation is: - ANSDeveloping written
procedures for documentation, developing checklists, developing field
reports
A Load switch tester or multi-switch tester is used to: - ANSverify the
correct operation of a load switch. The unit verified that the correct current
outputs are within the acceptable range for operation.
A loop analyzer is a unit that: - ANSa signal technician uses to troubleshoot
existing loops and test newly installed loops
A major distinguishing feature between NEMA TS-1 and TS-2 controllers is:
- ANSData bus
a metallic pull box lid must be - ANSbonded to a grounding source
A multimeter can detect the: - ANSresistance, voltage, or current of an
electrical circuit.
a plans preparation manual indicates information regarding: - ANSAmount
of detail, information, and proper format for traffic signal plans.
A traffic signal warrant study can determine the need of installation through
all of the following except:
2
, Traffic volumes that show insufficient gaps exist on the major street to allow
minor street traffic to enter or cross an intersection.
Road users at an intersection submitting a sufficient number of requests for
installation of a signal based on local requirements.
Pedestrian volumes indicate a need in order to allow safe crossing of a
road
Historical crash data shows that a signal would potentially improve safety
conditions - ANSRoad users at an intersection submitting a sufficient
number of requests for installation of a signal based on local requirements
A wire that is attache to the bottoms of the signal heads to prohibit
excessive movement or spinning of the traffic signals on the support wire -
ANStether wire
A work zone supervisor is responsible for which of the following tasks: -
ANSEnsure advance warning devices have not been removed or relocated.
An ammeter or current probe is: - ANSa device that measures the current
flowing through a wire or circuit.
An electro-mechanical controller has a: - ANSmotor that rotates the
mechanism.
3
Questions and Correct Answers 2025-
2026 Graded A
A 6' x 60' loop typically has how many turns of wire: - ANS two
a Circuit that is wired in Parallel is one where: - ANS each component has
its own direct path.
a Circuit that is wired in series is one where: - ANSthe current goes through
all of the electrical components of the circuit
a command that forces the traffic signal controller to end the green display
for an actuated phase - ANSforce off
a difference between NEMA cabinets and 170 cabinets is NEMA cabinets -
ANSrequire connection with harnesses pre-wired into the cabinet.
a disadvantage of video detection systems is: - ANSmay involve a higher
initial installation cost
A good nice step procedure for troubleshooting is: - ANSobserve, identify,
determine, correct, observe again
a hybrid system combines - ANSclosed loop systems with central computer
systems
1
,A Key component of documentation is: - ANSDeveloping written
procedures for documentation, developing checklists, developing field
reports
A Load switch tester or multi-switch tester is used to: - ANSverify the
correct operation of a load switch. The unit verified that the correct current
outputs are within the acceptable range for operation.
A loop analyzer is a unit that: - ANSa signal technician uses to troubleshoot
existing loops and test newly installed loops
A major distinguishing feature between NEMA TS-1 and TS-2 controllers is:
- ANSData bus
a metallic pull box lid must be - ANSbonded to a grounding source
A multimeter can detect the: - ANSresistance, voltage, or current of an
electrical circuit.
a plans preparation manual indicates information regarding: - ANSAmount
of detail, information, and proper format for traffic signal plans.
A traffic signal warrant study can determine the need of installation through
all of the following except:
2
, Traffic volumes that show insufficient gaps exist on the major street to allow
minor street traffic to enter or cross an intersection.
Road users at an intersection submitting a sufficient number of requests for
installation of a signal based on local requirements.
Pedestrian volumes indicate a need in order to allow safe crossing of a
road
Historical crash data shows that a signal would potentially improve safety
conditions - ANSRoad users at an intersection submitting a sufficient
number of requests for installation of a signal based on local requirements
A wire that is attache to the bottoms of the signal heads to prohibit
excessive movement or spinning of the traffic signals on the support wire -
ANStether wire
A work zone supervisor is responsible for which of the following tasks: -
ANSEnsure advance warning devices have not been removed or relocated.
An ammeter or current probe is: - ANSa device that measures the current
flowing through a wire or circuit.
An electro-mechanical controller has a: - ANSmotor that rotates the
mechanism.
3
