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IMSA Traffic Signal Technician Level II Practice Test
Practice mode
Question
1
of 25
QUESTION 1 / 25
In regards to public interactions, what should technicians avoid doing?
Choose one answer below.
A
Providing accurate information
✓
B
Arguing or threatening
✓
C
Listening to concerns
✓
D
Maintaining professionalism
✓
QUESTION 2 / 25
What is one potential drawback of not upgrading to LED lighting?
Choose one answer below.
A
Higher energy costs
✓
B
More frequent replacements
✓
C
Lower light quality
✓
D
Increased physical labor for installation
✓
QUESTION 3 / 25
Who was responsible for the development of the model 2070 controller?
Choose one answer below.
A
CALTRANS
✓
B
California DOT
✓
C
New York State DOT
✓
D
City of Los Angeles
✓
QUESTION 4 / 25
What aspect does the microprocessor control at an intersection?
Choose one answer below.
A
Signaling pedestrians
✓
B
Timing
✓
C
Traffic flow analysis
✓
D
Vehicle counting
✓
QUESTION 5 / 25
What measurements can a multi-meter provide?
Choose one answer below.
A
DC and AC voltage
✓
B
Resistance
✓
C
DC and AC current
✓
D
All of the above
✓
QUESTION 6 / 25
What is one advantage of using a digital multi-meter over an analog version?
Choose one answer below.
A
More durable
✓
B
It provides a go or no-go indication
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C
Automatic ranging of measurements
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D
Faster reaction time
✓
QUESTION 7 / 25
Which of the following is an advantage of video detection systems?
Choose one answer below.
A
Requires extensive pavement cutting
✓
B
Only operates in ideal weather conditions
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C
Can be used for incident assessment
✓
D
Has a low adaptability to construction zones
✓
QUESTION 8 / 25
What are the two basic types of overlaps in traffic signal phasing?
Choose one answer below.
A
Automatic and manual
✓
B
Simple and complex
✓
C
Independent and parent/child
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D
Sequential and parallel
✓
QUESTION 9 / 25
What advantage does using a microprocessor in traffic systems provide?
Choose one answer below.
A
Increased power consumption
✓
B
Real-time data processing
✓
C
Reduced complexity of systems
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D
Use of analog signals
✓
QUESTION 10 / 25
Intersections using LED displays use approximately what percentage of power compared to incandescent displays?
Choose one answer below.
A
5%
✓
B
10%
✓
C
15%
✓
D
20%
✓
QUESTION 11 / 25
What impact does switching to flashing mode have on traffic signals?
Choose one answer below.
A
Improves traffic flow
✓
B
Saves energy
✓
C
Eliminates signal errors
✓
D
Increases visibility
✓
QUESTION 12 / 25
Documenting maintenance activities helps ensure what?
Choose one answer below.
A
Higher service costs
✓
B
Better communication with the public
✓
C
More efficient repairs and record-keeping
✓
D
Longer repair times
✓
QUESTION 13 / 25
What are the two types of fiber optic cables commonly utilized in traffic signal systems?
Choose one answer below.
A
Single-mode and triple-mode
✓
B
Single-mode and multi-mode
✓
C
Dual-mode and multi-mode
✓
D
Single-phase and multi-phase
✓
QUESTION 14 / 25
What is the percentage reduction in power usage when using LED displays compared to incandescent?
Choose one answer below.
A
25%
✓
B
50%
✓
C
75%
✓
D
90%
✓
QUESTION 15 / 25
Which tool is used to test the continuity of fiber optic cables?
Choose one answer below.
A
Fiber optic tracker
✓
B
Optical power meter
✓
C
Signal generator
✓
D
Multimeter
✓
QUESTION 16 / 25
Which traffic signal controller is known for being compatible regardless of the manufacturer?
Choose one answer below.
A
The 2070 controller
✓
B
The 170 controller
✓
C
The 2100 controller
✓
D
The 2500 controller
✓
QUESTION 17 / 25
How do dial-up modems operate in a traffic signal system?
Choose one answer below.
A
By connecting directly to traffic cameras
✓
B
By sending data through cellular networks
✓
C
By transmitting data over telephone lines to a central computer
✓
D
By using GPS signals
✓
QUESTION 18 / 25
What advantage does fiber optic cabling provide for traffic signal agencies?
Choose one answer below.
A
Lower installation costs
✓
B
Higher capability for data transmission
✓
C
Less durability
✓
D
More frequent maintenance needs
✓
QUESTION 19 / 25
What change is monitored by the amplifier when a vehicle enters the detection area?
Choose one answer below.
A
Voltage change
✓
B
Frequency change
✓
C
Current change
✓
D
Capacitance change
✓
QUESTION 20 / 25
What setting must be adjusted to reduce "false calls" on an inductive loop?
Choose one answer below.
A
Amplitude
✓
B
Frequency
✓
C
Phase
✓
D
Gain
✓
QUESTION 21 / 25
Which of the following could improve a technician's troubleshooting skills?
Choose one answer below.
A
Reducing the amount of equipment used
✓
B
Inadequate training on new technologies
✓
C
Regular hands-on practice with equipment
✓
D
Minimizing interactions with peers
✓
QUESTION 22 / 25
What standardization established a pin configuration for traffic signal controllers?
Choose one answer below.
A
NEMA TS-1
✓
B
ANSI G-2
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C
DOT Standards
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D
ISO 9001
✓
QUESTION 23 / 25
Which three agencies collaborated to develop the 170 controller?
Choose one answer below.
A
California DOT, Florida DOT, Texas DOT
✓
B
California DOT, City of Los Angeles, New York State DOT
✓
C
New York City, Washington State DOT, California DOT
✓
D
City of Los Angeles, New Jersey DOT, Texas DOT
✓
QUESTION 24 / 25
When performing maintenance on signal systems, technicians most commonly use which type of connectivity option?
Choose one answer below.
A
Optical fiber
✓
B
Wireless
✓
C
Serial communication cable
✓
D
USB connection
✓
QUESTION 25 / 25
How is the Type 179 controller specification similar to the 170 specification?
Choose one answer below.
A
Uses similar housing
✓
B
Is compatible with older controllers
✓
C
Open architecture and allows for interchangeability of components
✓
D
Wire configuration is identical
✓
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