IMSA Traffic Signal Technician 2
Study Questions With Correct
Answers Latest Update 2026
1. What can be planned for either scheduled late-night flashing or scheduled
flashing of a signal that is only needed at certain times of the day or week, or
emergency? - ANSWER Flashing operation
2. What mode causes flashing circular yellow indications to the major street
approaches and flashing red indications are shown to the minor street
approaches? - ANSWER Yellow-red flashing mode
3. Flashing red indications are shown to every approach lane to the
intersection. This type of flashing operations essentially provides the same
type of control as an all-way stop control. - ANSWER Red-red flashing
mode
4. What traffic signal control function is typically enabled by an on-site user
via a switch selected inside the police panel? - ANSWER Stop time
5. What term defines the minimum initial time that the minimum assured green
is displayed? - ANSWER Minimum green
6. The minimum green time is established to provide what to the intersection. -
ANSWER Enough time for vehicles stopped between the detector and the
stop line to get started and move into the intersection.
,7. On what two factors is minimum green time dependent? - ANSWER The
location of the detector.
The number of vehicles that can be queued
8. When establishing the minimum green time consideration must be given
to(4): - ANSWER Pedestrian timing
Density operations
Controller type
Detection design
9. When there are no pedestrian features the minimum green time should be
calculated by? - ANSWER At least equal the minimum time it would take a
pedestrian to safely cross the intersection.
10.Typically how many seconds for a left-turn phase? - ANSWER 3 to 7
11.How many seconds for a minor street through phase? - ANSWER 5 to 15
12.How many seconds for a major street through phase? - ANSWER 15 to 25
13.The minimum green time must be long enough to? - ANSWER Meet
drivers expectations as to how long a green interval should be displayed.
14.What is the period of time that the signal displays are red for all approaches?
- ANSWER All-red clearance
15.This interval allows for the intersection to "what" before a green phase starts
again? - ANSWER Clear
,16.Factors used to determine the most appropriate time for an all red clearance
include: - ANSWER Type of vehicular traffic
Driver characteristics
Pedestrian activity in the intersection
17.What is the establishment of a definite timing relationship between adjacent
traffic signals? - ANSWER Coordination timing
18.Traffic signal coordination timings are developed to provide a degree of
consistency that should allow traffic to? - ANSWER Progress through a
number of intersections without stopping
19.What within traffic controllers allow for timing plans to transition from one
to another gradually so that traffic is not severely disrupted? - ANSWER
Algorithms
20.The amount of time that is allocated to a particular signal phase is the
phases? - ANSWER Split
21.A split includes what three things associated with the phase? - ANSWER
Green time
Yellow time
Red time
22.What is the transfer of the normal control of signals to a special signal
control mode? - ANSWER Preemption timing
, 23.Preemption timing has the purpose of servicing? - ANSWER Railroad
crossings
Emergency vehicle passage
Mass transit vehicle passage
Other special tasks
24.Preemption timing control requires "what" of normal traffic control to
provide the priority needs of a special task? - ANSWER Terminating
25.Transit preemption is often called what? - ANSWER Transit Priority
26.Transit priority can operate by two different techniques: - ANSWER Green
extension
Red truncation
27.What has the purpose of transferring the right of way to an emergency
vehicle that needs to traverse an intersection? - ANSWER Emergency
vehicle preemption
28.What are the two types of emergency vehicle preemptions? - ANSWER
Stationary
Mobile
29.How is stationary emergency vehicle preemption typically activated -
ANSWER When an emergency responder depresses a pushbutton located
within the facility .
Study Questions With Correct
Answers Latest Update 2026
1. What can be planned for either scheduled late-night flashing or scheduled
flashing of a signal that is only needed at certain times of the day or week, or
emergency? - ANSWER Flashing operation
2. What mode causes flashing circular yellow indications to the major street
approaches and flashing red indications are shown to the minor street
approaches? - ANSWER Yellow-red flashing mode
3. Flashing red indications are shown to every approach lane to the
intersection. This type of flashing operations essentially provides the same
type of control as an all-way stop control. - ANSWER Red-red flashing
mode
4. What traffic signal control function is typically enabled by an on-site user
via a switch selected inside the police panel? - ANSWER Stop time
5. What term defines the minimum initial time that the minimum assured green
is displayed? - ANSWER Minimum green
6. The minimum green time is established to provide what to the intersection. -
ANSWER Enough time for vehicles stopped between the detector and the
stop line to get started and move into the intersection.
,7. On what two factors is minimum green time dependent? - ANSWER The
location of the detector.
The number of vehicles that can be queued
8. When establishing the minimum green time consideration must be given
to(4): - ANSWER Pedestrian timing
Density operations
Controller type
Detection design
9. When there are no pedestrian features the minimum green time should be
calculated by? - ANSWER At least equal the minimum time it would take a
pedestrian to safely cross the intersection.
10.Typically how many seconds for a left-turn phase? - ANSWER 3 to 7
11.How many seconds for a minor street through phase? - ANSWER 5 to 15
12.How many seconds for a major street through phase? - ANSWER 15 to 25
13.The minimum green time must be long enough to? - ANSWER Meet
drivers expectations as to how long a green interval should be displayed.
14.What is the period of time that the signal displays are red for all approaches?
- ANSWER All-red clearance
15.This interval allows for the intersection to "what" before a green phase starts
again? - ANSWER Clear
,16.Factors used to determine the most appropriate time for an all red clearance
include: - ANSWER Type of vehicular traffic
Driver characteristics
Pedestrian activity in the intersection
17.What is the establishment of a definite timing relationship between adjacent
traffic signals? - ANSWER Coordination timing
18.Traffic signal coordination timings are developed to provide a degree of
consistency that should allow traffic to? - ANSWER Progress through a
number of intersections without stopping
19.What within traffic controllers allow for timing plans to transition from one
to another gradually so that traffic is not severely disrupted? - ANSWER
Algorithms
20.The amount of time that is allocated to a particular signal phase is the
phases? - ANSWER Split
21.A split includes what three things associated with the phase? - ANSWER
Green time
Yellow time
Red time
22.What is the transfer of the normal control of signals to a special signal
control mode? - ANSWER Preemption timing
, 23.Preemption timing has the purpose of servicing? - ANSWER Railroad
crossings
Emergency vehicle passage
Mass transit vehicle passage
Other special tasks
24.Preemption timing control requires "what" of normal traffic control to
provide the priority needs of a special task? - ANSWER Terminating
25.Transit preemption is often called what? - ANSWER Transit Priority
26.Transit priority can operate by two different techniques: - ANSWER Green
extension
Red truncation
27.What has the purpose of transferring the right of way to an emergency
vehicle that needs to traverse an intersection? - ANSWER Emergency
vehicle preemption
28.What are the two types of emergency vehicle preemptions? - ANSWER
Stationary
Mobile
29.How is stationary emergency vehicle preemption typically activated -
ANSWER When an emergency responder depresses a pushbutton located
within the facility .
