ISMA TRAFFIC SIGNAL TECHNICIAN II
EXAM VERSION A 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS |ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
How are vehicle phases typically numbered?
1 through 8
Which numbers in a vehicle phase a assigned to the through movements?
Even numbers
Which numbers are assigned to the left turn movements in a vehicle phase?
Odd numbers
Which phases are typically assigned to the major-street through movements?
2 and 6
The through phases are numbered in which direction and start with which phase?
Clockwise direction
Phase 2
An intersection that has four through phases and four protected left-turn phases is said to be an
"what" intersection?
Eight-phase
What is most commonly associated with a specific vehicular or pedestrian movement?
Traffic signal phase
1|Page
,What is the amount of time that a particular indication is given during a phase?
Interval
Each vehicular phase is usually comprised of three specific intervals:
Green interval
Yellow change interval
Red clearance interval
What is a series of conflicting phases that occur in an established order, but can never occur
simultaneously with each other?
Ring of a traffic signal controller
Controllers typically have what two types of ring operation?
Single
Dual
The number of rings is dependent upon "what" that is required for the intersection operation?
Phasing
When are controllers with 3 or 4 rings typically used?
When two or more separate intersections are controlled by a single controller
What are phases that cannot happen at the same time because they conflict with one another?
Sequential phases
In a sequential series of phases how many phases are served at a time?
One
What are used to provide signalization for specific movements that can be made while some of
the other phases of the traffic signal cycle are being served?
Overlaps
Overlaps are different from other phases because they cannot be?
Independently called into action
There are two basic types of overlaps, known as what?
Independent
Parent/child
2|Page
, What type of signals have detectors and gap counters, and can skip phases?
Actuated
The use of fully actuated instead of non-actuated coordinated phases can do what two things?
Better balance volume-to-capacity ratios
Decrease split failures
What phase allows left turning drivers to cross a conflicting traffic stream with care when there
are adequate gaps in the opposing traffic flow?
Permissive left turn
When are protected only left turns typically used ?(3)
High volume of through traffic
More than two through lanes
Intersection with constrained sight distance
What phasing occurs when the left turn in one direction gets the left turn arrow before the
opposing through movement gets the circular green, then the opposing left turn gets the green
arrow after the opposing through is stopped?
Lead/lag left turn phasing
What are the two types of flashing mode operation?
Yellow-red
Red-red
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?
Flashing operation
What mode causes flashing circular yellow indications to the major street approaches and
flashing red indications are shown to the minor street approaches?
Yellow-red flashing mode
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.
Red-red flashing mode
3|Page
EXAM VERSION A 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS |ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
How are vehicle phases typically numbered?
1 through 8
Which numbers in a vehicle phase a assigned to the through movements?
Even numbers
Which numbers are assigned to the left turn movements in a vehicle phase?
Odd numbers
Which phases are typically assigned to the major-street through movements?
2 and 6
The through phases are numbered in which direction and start with which phase?
Clockwise direction
Phase 2
An intersection that has four through phases and four protected left-turn phases is said to be an
"what" intersection?
Eight-phase
What is most commonly associated with a specific vehicular or pedestrian movement?
Traffic signal phase
1|Page
,What is the amount of time that a particular indication is given during a phase?
Interval
Each vehicular phase is usually comprised of three specific intervals:
Green interval
Yellow change interval
Red clearance interval
What is a series of conflicting phases that occur in an established order, but can never occur
simultaneously with each other?
Ring of a traffic signal controller
Controllers typically have what two types of ring operation?
Single
Dual
The number of rings is dependent upon "what" that is required for the intersection operation?
Phasing
When are controllers with 3 or 4 rings typically used?
When two or more separate intersections are controlled by a single controller
What are phases that cannot happen at the same time because they conflict with one another?
Sequential phases
In a sequential series of phases how many phases are served at a time?
One
What are used to provide signalization for specific movements that can be made while some of
the other phases of the traffic signal cycle are being served?
Overlaps
Overlaps are different from other phases because they cannot be?
Independently called into action
There are two basic types of overlaps, known as what?
Independent
Parent/child
2|Page
, What type of signals have detectors and gap counters, and can skip phases?
Actuated
The use of fully actuated instead of non-actuated coordinated phases can do what two things?
Better balance volume-to-capacity ratios
Decrease split failures
What phase allows left turning drivers to cross a conflicting traffic stream with care when there
are adequate gaps in the opposing traffic flow?
Permissive left turn
When are protected only left turns typically used ?(3)
High volume of through traffic
More than two through lanes
Intersection with constrained sight distance
What phasing occurs when the left turn in one direction gets the left turn arrow before the
opposing through movement gets the circular green, then the opposing left turn gets the green
arrow after the opposing through is stopped?
Lead/lag left turn phasing
What are the two types of flashing mode operation?
Yellow-red
Red-red
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?
Flashing operation
What mode causes flashing circular yellow indications to the major street approaches and
flashing red indications are shown to the minor street approaches?
Yellow-red flashing mode
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.
Red-red flashing mode
3|Page
