E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
← Leave quiz
IMSA Traffic Signal II Practice Questions - IMSA Traffic Signal Field Technician Level II Certification Exam Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
What capability distinguishes a NEMA TS 2 malfunction management unit from an older parallel-input conflict monitor?
Choose one answer below.
A
Monitoring timing errors without observing field outputs
✓
B
MMU communication on the TS 2 serial bus
✓
C
The conflict monitor is used in TS 2 cabinets, while the MMU is used in TS 1 cabinets
✓
D
There is no functional difference — they are the same device with different names
✓
QUESTION 2 / 25
In a coordinated signal system, what does the term 'offset' refer to?
Choose one answer below.
A
The physical distance between adjacent signal poles
✓
B
The timing relationship to the system reference
✓
C
The voltage difference between two intersections sharing communication cable
✓
D
The difference in cycle length between two adjacent signals
✓
QUESTION 3 / 25
What type of controller operation uses detectors to extend green time based on real-time demand?
Choose one answer below.
A
Pre-timed operation
✓
B
Actuated operation
✓
C
Manual operation
✓
D
Flash operation
✓
QUESTION 4 / 25
What communication protocol is used in NEMA TS 2 cabinets for data exchange between the controller and cabinet components?
Choose one answer below.
A
TCP/IP Ethernet
✓
B
RS-232 serial
✓
C
SDLC (Synchronous Data Link Control) via the TS 2 port connector
✓
D
USB 2.0
✓
QUESTION 5 / 25
When programming a coordinated signal plan, what three parameters must be set for each intersection?
Choose one answer below.
A
Voltage, amperage, and resistance
✓
B
Cycle length, offset, and splits
✓
C
Minimum green, maximum green, and passage time
✓
D
Loop sensitivity, delay, and extension
✓
QUESTION 6 / 25
What is the Bus Interface Unit (BIU) in a TS 2 traffic signal cabinet?
Choose one answer below.
A
A device that connects the cabinet to public transit vehicles
✓
B
The TS 2 serial-bus interface to cabinet devices
✓
C
A backup power interface for battery systems
✓
D
A network router that connects the cabinet to the internet
✓
QUESTION 7 / 25
What is the purpose of an actuated-coordinated mode of signal operation?
Choose one answer below.
A
To operate the signal in full flash mode during coordination
✓
B
Actuated service within a coordinated plan
✓
C
To override all detector calls during coordinated periods
✓
D
To manually control the signal while maintaining coordination
✓
QUESTION 8 / 25
What condition does the MMU 'red fail' monitoring check for?
Choose one answer below.
A
A red signal that is too bright
✓
B
Missing required red field output
✓
C
A red lens that is cracked or damaged
✓
D
A red signal that is displaying the wrong shade of red
✓
QUESTION 9 / 25
What is a time-space diagram used for in traffic signal coordination?
Choose one answer below.
A
To show cabinet component locations
✓
B
Time-versus-distance progression
✓
C
To schedule maintenance
✓
D
To show cabinet wiring
✓
QUESTION 10 / 25
When troubleshooting a signal that is stuck in flash mode, what should be checked first?
Choose one answer below.
A
The signal timing plan
✓
B
The MMU event log
✓
C
The pedestrian pushbuttons
✓
D
The communication link to the central system
✓
QUESTION 11 / 25
What is the purpose of detector delay settings on a loop detector amplifier?
Choose one answer below.
A
To delay the entire signal cycle
✓
B
Rejecting brief unwanted detector activations
✓
C
To add time between the yellow and red intervals
✓
D
To slow down the detector's response time for power savings
✓
QUESTION 12 / 25
What is the function of the 'force-off' in a coordinated signal plan?
Choose one answer below.
A
To permanently disable a signal phase
✓
B
Ending a phase at its scheduled force-off point
✓
C
To force the signal into flash mode
✓
D
To remove a detector call from the controller memory
✓
QUESTION 13 / 25
Which medium is a traditional hardwired interconnect for closely spaced traffic signals?
Choose one answer below.
A
Fiber optic cable exclusively
✓
B
Twisted pair copper cable (hardwire interconnect)
✓
C
Satellite uplink
✓
D
Cellular modem exclusively
✓
QUESTION 14 / 25
In coordinated signal timing, what is a yield point?
Choose one answer below.
A
A roadside yield-sign location
✓
B
A cycle reference for yielding the coordinated phase
✓
C
The maximum green time reserved for a non-coordinated phase
✓
D
The maximum progression speed
✓
QUESTION 15 / 25
Which feature helps make a pedestrian pushbutton accessible?
Choose one answer below.
A
Mount it above ordinary reach
✓
B
A reachable, one-hand-operable button at an accessible space
✓
C
Put every button only on the right side
✓
D
Omit buttons where pedestrians are expected
✓
QUESTION 16 / 25
A video detection camera is producing intermittent false calls during nighttime operation. What is the most likely cause?
Choose one answer below.
A
The camera lens cap was left on
✓
B
Changing headlight, shadow, or low-light imagery
✓
C
The camera is mounted too high
✓
D
The detector amplifier sensitivity is set too low
✓
QUESTION 17 / 25
What is the purpose of a UPS (Uninterruptible Power Supply) system at a traffic signal installation?
Choose one answer below.
A
To increase the voltage output to signal heads
✓
B
Temporary backup power
✓
C
To permanently replace utility power at remote locations
✓
D
To regulate the frequency of AC power
✓
QUESTION 18 / 25
When communication between a central or master system and a local controller is lost, what determines the local response?
Choose one answer below.
A
All signals immediately go to flash
✓
B
The approved local fallback and time-base configuration
✓
C
All signals revert to all-red until communication is restored
✓
D
The signals immediately switch to fully actuated free-running mode
✓
QUESTION 19 / 25
What measurement should be taken to verify the condition of a UPS battery?
Choose one answer below.
A
Measure the inductance of the battery cells
✓
B
A battery load test
✓
C
Measure the frequency output of the battery
✓
D
Count the number of charge cycles on the display
✓
QUESTION 20 / 25
What is the purpose of the 'simultaneous gap out' feature in a dual-ring controller?
Choose one answer below.
A
To force all phases to gap out at exactly the same time
✓
B
Simultaneous barrier crossing after both rings gap out
✓
C
To create a gap in all detector coverage simultaneously
✓
D
To synchronize all detector amplifier sensitivity settings
✓
QUESTION 21 / 25
Under the general NEC Chapter 9 conduit-fill table, what fill percentage applies when a raceway contains more than two conductors or multiconductor cables?
Choose one answer below.
A
20% of conduit cross-sectional area
✓
B
40% of conduit cross-sectional area
✓
C
60% of conduit cross-sectional area
✓
D
80% of conduit cross-sectional area
✓
QUESTION 22 / 25
What is an Accessible Pedestrian Signal (APS)?
Choose one answer below.
A
A signal that is mounted at a lower height than standard
✓
B
Audible and vibrotactile pedestrian information
✓
C
A remote-controlled pedestrian signal operated by transit drivers
✓
D
A pedestrian signal with extra-large countdown numbers
✓
QUESTION 23 / 25
A controller shows a phase timing to maximum green every cycle but traffic is light. What is the most likely cause?
Choose one answer below.
A
The maximum green is set too low
✓
B
A constant call or max recall
✓
C
The conflict monitor is malfunctioning
✓
D
The offset is set incorrectly
✓
QUESTION 24 / 25
What does the term 'bandwidth' mean in traffic signal coordination?
Choose one answer below.
A
The data transfer rate of the communication link between intersections
✓
B
Usable progression time within the green band
✓
C
The frequency range of the detector amplifier
✓
D
The physical width of the intersection approach
✓
QUESTION 25 / 25
What safety function is shared by a conflict monitor or malfunction management unit?
Choose one answer below.
A
Resolve network-address conflicts
✓
B
Monitoring unsafe field-output and fault conditions
✓
C
Choose coordination offsets
✓
D
Block all preemption requests
✓
← Previous
0 of 25 answered
Next question →
Finish & see results →