ISMA Traffic Signal Technician II Highlighted Study
Material 2025/2026 NEW!!
The traffic field technician is responsible for performing what types of maintenance on signals? -
Ans Preven ve and Emergency
The single most important focus for the traffic signal field technician is? - Ans Safety
Three main categories of safety a traffic signal technician is responsible for? - Ans Safety of
motorist and pedestrians
His or her own personal safety
Safety of public and personal property
Traffic signal field technicians perform several maintenance and repair func ons above the
ground and roadway typically using what two vehicles? - Ans Bucket Truck
Aerial li$ (pla&orm truck)
While using a bucket truck or aerial li$ what implement provides proper protec on for the
user? - Ans Protec ve Harness
What responsibili es (liability) does a Traffic signal technician have while involved in repair,
tes ng or maintenance? - Ans Legal liability
Dealing with the public
It is impera ve that the traffic signal field technician maintain comprehensive what of all the
steps taken during repair and maintenance of traffic signals? - Ans Documenta on
What two instances are documenta on required for a traffic signal field technician? - Ans
Rou ne maintenance
,Emergency repair
The "word" public usually represents the following individuals (4): - Ans Road users
Area residents / Property owners
Elected and appointed officials
The media
Several means of public interac on are (3): - Ans Mail or email
Telephone contact
Face to face mee ngs
When dealing with the public, keep in mind that the rou nes of public users may be disrupted
for periods of me during construc on. How should a traffic signal field technician interact with
the public? (5) - Ans Always be polite
Be confident when speaking
Communicate clearly in understandable terminology
Don't argue or threaten
Don't provide informa on if you are uncertain of its accuracy.
Traffic signal controller units of todays traffic systems are controlled by what? - Ans
Microprocessor
The microprocessor is programmed to recognize what? - Ans Input requests from vehicle
detec on systems
A microprocessor takes appropriate ac on to control intersec on what? - Ans Timing
, A forerunner of the electronic controllers that we have today was the? - Ans Electro-
mechanical controller
What year where solid state electronic controllers developed to replace the electro-mechanical
controllers? - Ans 1970's
What two improvements differen ated electronic controllers from electro-mechanical
controllers? - Ans More dependable
Added many more features
What was the standardiza on that primarily established a pin configura on in the controller
and defined a func on for every pin? - Ans NEMA TS-1
The NEMA TS-1 has three connectors which where known as: - Ans A,B, and C connectors
NEMA TS-1 had how many connectors? - Ans Three
The NEMA TS-1 defined every pin for each connector as either what two connec on types? -
Ans Input or Output
NEMA also allowed manufactures to add an addi onal feature on the fourth connector. What
was this connector know as? - Ans D connector
What was the D connector commonly used for? - Ans Communica ons
Pre-emp on
Other special features
What three agencies joined together to help develop the 170 controller? - Ans California DOT
Material 2025/2026 NEW!!
The traffic field technician is responsible for performing what types of maintenance on signals? -
Ans Preven ve and Emergency
The single most important focus for the traffic signal field technician is? - Ans Safety
Three main categories of safety a traffic signal technician is responsible for? - Ans Safety of
motorist and pedestrians
His or her own personal safety
Safety of public and personal property
Traffic signal field technicians perform several maintenance and repair func ons above the
ground and roadway typically using what two vehicles? - Ans Bucket Truck
Aerial li$ (pla&orm truck)
While using a bucket truck or aerial li$ what implement provides proper protec on for the
user? - Ans Protec ve Harness
What responsibili es (liability) does a Traffic signal technician have while involved in repair,
tes ng or maintenance? - Ans Legal liability
Dealing with the public
It is impera ve that the traffic signal field technician maintain comprehensive what of all the
steps taken during repair and maintenance of traffic signals? - Ans Documenta on
What two instances are documenta on required for a traffic signal field technician? - Ans
Rou ne maintenance
,Emergency repair
The "word" public usually represents the following individuals (4): - Ans Road users
Area residents / Property owners
Elected and appointed officials
The media
Several means of public interac on are (3): - Ans Mail or email
Telephone contact
Face to face mee ngs
When dealing with the public, keep in mind that the rou nes of public users may be disrupted
for periods of me during construc on. How should a traffic signal field technician interact with
the public? (5) - Ans Always be polite
Be confident when speaking
Communicate clearly in understandable terminology
Don't argue or threaten
Don't provide informa on if you are uncertain of its accuracy.
Traffic signal controller units of todays traffic systems are controlled by what? - Ans
Microprocessor
The microprocessor is programmed to recognize what? - Ans Input requests from vehicle
detec on systems
A microprocessor takes appropriate ac on to control intersec on what? - Ans Timing
, A forerunner of the electronic controllers that we have today was the? - Ans Electro-
mechanical controller
What year where solid state electronic controllers developed to replace the electro-mechanical
controllers? - Ans 1970's
What two improvements differen ated electronic controllers from electro-mechanical
controllers? - Ans More dependable
Added many more features
What was the standardiza on that primarily established a pin configura on in the controller
and defined a func on for every pin? - Ans NEMA TS-1
The NEMA TS-1 has three connectors which where known as: - Ans A,B, and C connectors
NEMA TS-1 had how many connectors? - Ans Three
The NEMA TS-1 defined every pin for each connector as either what two connec on types? -
Ans Input or Output
NEMA also allowed manufactures to add an addi onal feature on the fourth connector. What
was this connector know as? - Ans D connector
What was the D connector commonly used for? - Ans Communica ons
Pre-emp on
Other special features
What three agencies joined together to help develop the 170 controller? - Ans California DOT
