IMSA level 1 certification Exam 2025
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Where are you when you install alternating flashing 12" red lights? - Correct answers✔✔At a
railroad crossing.
Who determins the the standards on traffic control devices and sets the requirements for
uniformity? - Correct answers✔✔The Manual on uniform traffic control devices, (MUTCD).
What is the the voltage that a traffic signal cabinet needs to run all its components? - Correct
answers✔✔120 volts AC
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? -
Correct answers✔✔A ramp meter on a ramp to a highway.
What is a flashing signal along the road called? - Correct answers✔✔A flashing beacon.
What is the definition of short term work zone as per the MUTCD? - Correct answers✔✔1 hour
or less
What's OSHA? - Correct answers✔✔Occupational and safety health administration
Can you get your level III certification and what are they? - Correct answers✔✔Yes, and it's for
bench and field electrician
, I'm working near power lines where would I get my clearance from? - Correct answers✔✔CEC,
NEC, NESC
What are the three basic types of beacons? - Correct answers✔✔Stop sign beacon, warning
beacon, and flashing beacon.
What is the difference between concurrent and sequential phases? - Correct
answers✔✔Concurrent phases, phases that run together. Sequential phases, are phases that run
one at a time.
I have a dual ring controller and all my through phases are even, what do I mean? - Correct
answers✔✔The dual ring phases are 2,4,6,8
What is the cheapest way to coordinate a corridor of signals? What needs to stay the same
throughout the day? - Correct answers✔✔Time based coordination, and cycle length.
Explain the white walking man, the flashing orange hand on a ped head and how is this time
figured? - Correct answers✔✔The white walking man is the ped head walk interval, and the ped
change clearance interval is the flashing orange hand.
What makes up the green interval? - Correct answers✔✔Initial green time,
passage/extension/gap time, and max green time.
At most intersections what are phases 2,6 called, and phases 4,8 called - Correct
answers✔✔Phases 2,6 are called Main Street, and 4,8 are called side street.
Name the three traffic signal systems? - Correct answers✔✔Closed loop, central computer,
hybrid systems.
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Where are you when you install alternating flashing 12" red lights? - Correct answers✔✔At a
railroad crossing.
Who determins the the standards on traffic control devices and sets the requirements for
uniformity? - Correct answers✔✔The Manual on uniform traffic control devices, (MUTCD).
What is the the voltage that a traffic signal cabinet needs to run all its components? - Correct
answers✔✔120 volts AC
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? -
Correct answers✔✔A ramp meter on a ramp to a highway.
What is a flashing signal along the road called? - Correct answers✔✔A flashing beacon.
What is the definition of short term work zone as per the MUTCD? - Correct answers✔✔1 hour
or less
What's OSHA? - Correct answers✔✔Occupational and safety health administration
Can you get your level III certification and what are they? - Correct answers✔✔Yes, and it's for
bench and field electrician
, I'm working near power lines where would I get my clearance from? - Correct answers✔✔CEC,
NEC, NESC
What are the three basic types of beacons? - Correct answers✔✔Stop sign beacon, warning
beacon, and flashing beacon.
What is the difference between concurrent and sequential phases? - Correct
answers✔✔Concurrent phases, phases that run together. Sequential phases, are phases that run
one at a time.
I have a dual ring controller and all my through phases are even, what do I mean? - Correct
answers✔✔The dual ring phases are 2,4,6,8
What is the cheapest way to coordinate a corridor of signals? What needs to stay the same
throughout the day? - Correct answers✔✔Time based coordination, and cycle length.
Explain the white walking man, the flashing orange hand on a ped head and how is this time
figured? - Correct answers✔✔The white walking man is the ped head walk interval, and the ped
change clearance interval is the flashing orange hand.
What makes up the green interval? - Correct answers✔✔Initial green time,
passage/extension/gap time, and max green time.
At most intersections what are phases 2,6 called, and phases 4,8 called - Correct
answers✔✔Phases 2,6 are called Main Street, and 4,8 are called side street.
Name the three traffic signal systems? - Correct answers✔✔Closed loop, central computer,
hybrid systems.
