IMSA LEVEL 1 CERTIFICATION EXAM
Questions and Answers
1. Where are you when you install alternating flashing 12" red lights?
ANS At a railroad crossing.
2. Who determines the standards on traffic control devices and
sets the requirements for uniformity?
ANS The Manual on uniform traffic control devices, (MUTCD).
3. What is the voltage that a traffic signal cabinet needs to run
all its components?
ANS 120 volts AC
4. Where are you when you come across a signal that has a ped pole
on each side of the road, each having a 3 section signal on top followed
with a 2 section mounted directly under neath?
ANS A ramp meter on a ramp to a highway.
5. What is a flashing signal along the road called?
ANS A flashing beacon.
6. What is the definition of short term work zone as per the MUTCD?
ANS 1 hour or less
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, 7. What's OSHA?
ANS Occupational and safety health administration
8. Can you get your level III certification and what are they?
ANS Yes, and it's for bench and field electrician
9. I'm working near power lines where would I get my clearance from?
ANS CEC, NEC, NESC
10. What are the three basic types of beacons?
ANS Stop sign beacon, warning beacon, and flashing beacon.
11. What is the difference between concurrent and sequential
phases?
ANS Concurrent phases, phases that run together. Sequential phases, are phases that run one at
a time.
12. I have a dual ring controller and all my through phases are
even, what do I mean?
ANS The dual ring phases are 2,4,6,8
13. What is the cheapest way to coordinate a corridor of signals?
What needs to stay the same throughout the day?
ANS Time based coordination, and cycle length.
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Questions and Answers
1. Where are you when you install alternating flashing 12" red lights?
ANS At a railroad crossing.
2. Who determines the standards on traffic control devices and
sets the requirements for uniformity?
ANS The Manual on uniform traffic control devices, (MUTCD).
3. What is the voltage that a traffic signal cabinet needs to run
all its components?
ANS 120 volts AC
4. Where are you when you come across a signal that has a ped pole
on each side of the road, each having a 3 section signal on top followed
with a 2 section mounted directly under neath?
ANS A ramp meter on a ramp to a highway.
5. What is a flashing signal along the road called?
ANS A flashing beacon.
6. What is the definition of short term work zone as per the MUTCD?
ANS 1 hour or less
1/
8
, 7. What's OSHA?
ANS Occupational and safety health administration
8. Can you get your level III certification and what are they?
ANS Yes, and it's for bench and field electrician
9. I'm working near power lines where would I get my clearance from?
ANS CEC, NEC, NESC
10. What are the three basic types of beacons?
ANS Stop sign beacon, warning beacon, and flashing beacon.
11. What is the difference between concurrent and sequential
phases?
ANS Concurrent phases, phases that run together. Sequential phases, are phases that run one at
a time.
12. I have a dual ring controller and all my through phases are
even, what do I mean?
ANS The dual ring phases are 2,4,6,8
13. What is the cheapest way to coordinate a corridor of signals?
What needs to stay the same throughout the day?
ANS Time based coordination, and cycle length.
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8
