ISMA TRAFFIC SIGNAL TECHNICIAN II EXAM QUESTIONS AND
ANSWERS
The traffic field technician is responsible for performing what types of maintenance on signals? -
CORRECT ANSWER✅✅Preventive and Emergency
The single most important focus for the traffic signal field technician is? - CORRECT ANSWER✅✅Safety
Three main categories of safety a traffic signal technician is responsible for? - CORRECT
ANSWER✅✅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 functions above the ground and
roadway typically using what two vehicles? - CORRECT ANSWER✅✅Bucket Truck
Aerial lift (platform truck)
While using a bucket truck or aerial lift what implement provides proper protection for the user? -
CORRECT ANSWER✅✅Protective Harness
What responsibilities (liability) does a Traffic signal technician have while involved in repair, testing or
maintenance? - CORRECT ANSWER✅✅Legal liability
Dealing with the public
It is imperative that the traffic signal field technician maintain comprehensive what of all the steps taken
during repair and maintenance of traffic signals? - CORRECT ANSWER✅✅Documentation
What two instances are documentation required for a traffic signal field technician? - CORRECT
ANSWER✅✅Routine maintenance
Emergency repair
,The "word" public usually represents the following individuals (4): - CORRECT ANSWER✅✅Road users
Area residents / Property owners
Elected and appointed officials
The media
Several means of public interaction are (3): - CORRECT ANSWER✅✅Mail or email
Telephone contact
Face to face meetings
When dealing with the public, keep in mind that the routines of public users may be disrupted for
periods of time during construction. How should a traffic signal field technician interact with the public?
(5) - CORRECT ANSWER✅✅Always be polite
Be confident when speaking
Communicate clearly in understandable terminology
Don't argue or threaten
Don't provide information if you are uncertain of its accuracy.
Traffic signal controller units of todays traffic systems are controlled by what? - CORRECT
ANSWER✅✅Microprocessor
The microprocessor is programmed to recognize what? - CORRECT ANSWER✅✅Input requests from
vehicle detection systems
A microprocessor takes appropriate action to control intersection what? - CORRECT ANSWER✅✅Timing
A forerunner of the electronic controllers that we have today was the? - CORRECT ANSWER✅✅Electro-
mechanical controller
What year where solid state electronic controllers developed to replace the electro-mechanical
controllers? - CORRECT ANSWER✅✅1970's
, What two improvements differentiated electronic controllers from electro-mechanical controllers? -
CORRECT ANSWER✅✅More dependable
Added many more features
What was the standardization that primarily established a pin configuration in the controller and
defined a function for every pin? - CORRECT ANSWER✅✅NEMA TS-1
The NEMA TS-1 has three connectors which where known as: - CORRECT ANSWER✅✅A,B, and C
connectors
NEMA TS-1 had how many connectors? - CORRECT ANSWER✅✅Three
The NEMA TS-1 defined every pin for each connector as either what two connection types? - CORRECT
ANSWER✅✅Input or Output
NEMA also allowed manufactures to add an additional feature on the fourth connector. What was this
connector know as? - CORRECT ANSWER✅✅D connector
What was the D connector commonly used for? - CORRECT ANSWER✅✅Communications
Pre-emption
Other special features
What three agencies joined together to help develop the 170 controller? - CORRECT
ANSWER✅✅California DOT
City of Los Angeles California
New York State DOT
What controller is an open-architecture based general purpose microcomputer for traffic control? -
CORRECT ANSWER✅✅Model 170 controller
ANSWERS
The traffic field technician is responsible for performing what types of maintenance on signals? -
CORRECT ANSWER✅✅Preventive and Emergency
The single most important focus for the traffic signal field technician is? - CORRECT ANSWER✅✅Safety
Three main categories of safety a traffic signal technician is responsible for? - CORRECT
ANSWER✅✅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 functions above the ground and
roadway typically using what two vehicles? - CORRECT ANSWER✅✅Bucket Truck
Aerial lift (platform truck)
While using a bucket truck or aerial lift what implement provides proper protection for the user? -
CORRECT ANSWER✅✅Protective Harness
What responsibilities (liability) does a Traffic signal technician have while involved in repair, testing or
maintenance? - CORRECT ANSWER✅✅Legal liability
Dealing with the public
It is imperative that the traffic signal field technician maintain comprehensive what of all the steps taken
during repair and maintenance of traffic signals? - CORRECT ANSWER✅✅Documentation
What two instances are documentation required for a traffic signal field technician? - CORRECT
ANSWER✅✅Routine maintenance
Emergency repair
,The "word" public usually represents the following individuals (4): - CORRECT ANSWER✅✅Road users
Area residents / Property owners
Elected and appointed officials
The media
Several means of public interaction are (3): - CORRECT ANSWER✅✅Mail or email
Telephone contact
Face to face meetings
When dealing with the public, keep in mind that the routines of public users may be disrupted for
periods of time during construction. How should a traffic signal field technician interact with the public?
(5) - CORRECT ANSWER✅✅Always be polite
Be confident when speaking
Communicate clearly in understandable terminology
Don't argue or threaten
Don't provide information if you are uncertain of its accuracy.
Traffic signal controller units of todays traffic systems are controlled by what? - CORRECT
ANSWER✅✅Microprocessor
The microprocessor is programmed to recognize what? - CORRECT ANSWER✅✅Input requests from
vehicle detection systems
A microprocessor takes appropriate action to control intersection what? - CORRECT ANSWER✅✅Timing
A forerunner of the electronic controllers that we have today was the? - CORRECT ANSWER✅✅Electro-
mechanical controller
What year where solid state electronic controllers developed to replace the electro-mechanical
controllers? - CORRECT ANSWER✅✅1970's
, What two improvements differentiated electronic controllers from electro-mechanical controllers? -
CORRECT ANSWER✅✅More dependable
Added many more features
What was the standardization that primarily established a pin configuration in the controller and
defined a function for every pin? - CORRECT ANSWER✅✅NEMA TS-1
The NEMA TS-1 has three connectors which where known as: - CORRECT ANSWER✅✅A,B, and C
connectors
NEMA TS-1 had how many connectors? - CORRECT ANSWER✅✅Three
The NEMA TS-1 defined every pin for each connector as either what two connection types? - CORRECT
ANSWER✅✅Input or Output
NEMA also allowed manufactures to add an additional feature on the fourth connector. What was this
connector know as? - CORRECT ANSWER✅✅D connector
What was the D connector commonly used for? - CORRECT ANSWER✅✅Communications
Pre-emption
Other special features
What three agencies joined together to help develop the 170 controller? - CORRECT
ANSWER✅✅California DOT
City of Los Angeles California
New York State DOT
What controller is an open-architecture based general purpose microcomputer for traffic control? -
CORRECT ANSWER✅✅Model 170 controller
