1|Page
IMSA Traffic Signal Technician 2 ,2026 ACTUAL
COMPREHENSIVE FREQUENTLY TESTED REAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES| ALREADY GRADED
A+ | NEWEST EXAM!!!
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) - 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? - Answer-Microprocessor
The microprocessor is programmed to recognize what? -
Answer-Input requests from vehicle detection systems
,2|Page
A microprocessor takes appropriate action to control
intersection what? - Answer-Timing
A forerunner of the electronic controllers that we have
today was the? - Answer-Electro-mechanical controller
What year where solid state electronic controllers
developed to replace the electro-mechanical controllers? -
Answer-1970's
What two improvements differentiated electronic
controllers from electro-mechanical controllers? - 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? - Answer-NEMA TS-1
The NEMA TS-1 has three connectors which where known
as: - Answer-A,B, and C connectors
,3|Page
NEMA TS-1 had how many connectors? - Answer-Three
The NEMA TS-1 defined every pin for each connector as
either what two connection types? - Answer-Input or
Output
NEMA also allowed manufactures to add an additional
feature on the fourth connector. What was this connector
know as? - Answer-D connector
What was the D connector commonly used for? - Answer-
Communications
Pre-emption
Other special features
What three agencies joined together to help develop the
170 controller? - Answer-California DOT
City of Los Angeles California
New York State DOT
, 4|Page
What controller is an open-architecture based general
purpose microcomputer for traffic control? - Answer-Model
170 controller
What two specifications does the model 170 controller
require? - Answer-A specific hardware architecture
A specific processor
How is the Type 179 controller specification similar to the
170 specification?(2) - Answer-Open architecture
Allows for interchangeability of components
The traffic field technician is responsible for performing
what types of maintenance on signals? - Answer-
Preventive and Emergency
The single most important focus for the traffic signal field
technician is? - Answer-Safety
Three main categories of safety a traffic signal technician
is responsible for? - Answer-Safety of motorist and
pedestrians
His or her own personal safety
IMSA Traffic Signal Technician 2 ,2026 ACTUAL
COMPREHENSIVE FREQUENTLY TESTED REAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES| ALREADY GRADED
A+ | NEWEST EXAM!!!
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) - 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? - Answer-Microprocessor
The microprocessor is programmed to recognize what? -
Answer-Input requests from vehicle detection systems
,2|Page
A microprocessor takes appropriate action to control
intersection what? - Answer-Timing
A forerunner of the electronic controllers that we have
today was the? - Answer-Electro-mechanical controller
What year where solid state electronic controllers
developed to replace the electro-mechanical controllers? -
Answer-1970's
What two improvements differentiated electronic
controllers from electro-mechanical controllers? - 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? - Answer-NEMA TS-1
The NEMA TS-1 has three connectors which where known
as: - Answer-A,B, and C connectors
,3|Page
NEMA TS-1 had how many connectors? - Answer-Three
The NEMA TS-1 defined every pin for each connector as
either what two connection types? - Answer-Input or
Output
NEMA also allowed manufactures to add an additional
feature on the fourth connector. What was this connector
know as? - Answer-D connector
What was the D connector commonly used for? - Answer-
Communications
Pre-emption
Other special features
What three agencies joined together to help develop the
170 controller? - Answer-California DOT
City of Los Angeles California
New York State DOT
, 4|Page
What controller is an open-architecture based general
purpose microcomputer for traffic control? - Answer-Model
170 controller
What two specifications does the model 170 controller
require? - Answer-A specific hardware architecture
A specific processor
How is the Type 179 controller specification similar to the
170 specification?(2) - Answer-Open architecture
Allows for interchangeability of components
The traffic field technician is responsible for performing
what types of maintenance on signals? - Answer-
Preventive and Emergency
The single most important focus for the traffic signal field
technician is? - Answer-Safety
Three main categories of safety a traffic signal technician
is responsible for? - Answer-Safety of motorist and
pedestrians
His or her own personal safety
