Page 1 of 81
ISMA Traffic Signal Technician I&II Exam 2026-2027
COMPLETE 350 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
ISMA Traffic Signal Technician I
QUESTION: What is NOT true when it comes to dealing with the public? - ANSWER-If you are
unsure of the answer, give them the incorrect information so you can keep working
QUESTION: What is NOT a function of a modern traffic signal controller? - ANSWER-Processing
when a vehicle has run a red light and informing the police
QUESTION: What was a major drawback with the first traffic signal controllers? - ANSWER-
Maintaining the mechanical parts
QUESTION: When did standardization of controllers become established in the United States
and Canada? - ANSWER-1970s
,Page 2 of 81
QUESTION: What was limited by the fourth proprietary connector used with the NEMA TS-1? -
ANSWER-the type of replacement model
QUESTION: Which type of controller utilizes a high speed data channel between all major
equipment to maximize the functionality and expandability of the controller assembly? -
ANSWER-NEMA TS-2 Type 1
QUESTION: What greatly reduced wire connections in the controller cabinet with the use of the
RS-485 with the SDLC? - ANSWER-Bus interface unit
QUESTION: What was the intent of developing the ATC specifications? - ANSWER-To have an
open architecture hardware and software platform for ITS application
Q; What organization has established requirements for PPE in certain working situations? -
ANSWER-OSHA/CCOHS
QUESTION: Which of the following certifications must be attained first? - ANSWER-Traffic signal
Tech. Level 1
,Page 3 of 81
QUESTION: Upgrades or revisions to the traffic signal are the responsibility of whom? -
ANSWER-professional engineer
QUESTION: What is NOT an example of documentation that can limit the liability of the
technician and/or agency? - ANSWER-NTCIP
QUESTION: What is the single most important focus that the field technician should have? -
ANSWER-safety
QUESTION: For many agencies, what is the least amount of technicians required to perform
work with an aerial lift? - ANSWER-2
QUESTION: Which agency developed a communications protocol for ITS systems, field devices
and software so basic functionality should be interchangeable regardless of the manufacturer? -
ANSWER-NTCIP
, Page 4 of 81
QUESTION: Before beginning work that requires workers or vehicles to be in or over the
roadway, what should traffic signal field technicians ensure is in place? - ANSWER-Temporary
traffic control (TTC)
QUESTION: What is NOT a common type of truck used for traffic signal maintenance? -
ANSWER-dump truck
QUESTION: Traffic signals can be attached to Mast Arms using which of the following?
- disconnect hangers attached to the mast arm which suspend the signal
- bracket that is rigidly mounted to the mast arm with a clamping device
- pipe mounts that screw into nipples installed directly into the mast arm
- ALL of the above - ANSWER-all of the above
QUESTION: Traffic signal supports are NOT used to display the following items: - ANSWER-
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ISMA Traffic Signal Technician I&II Exam 2026-2027
COMPLETE 350 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
ISMA Traffic Signal Technician I
QUESTION: What is NOT true when it comes to dealing with the public? - ANSWER-If you are
unsure of the answer, give them the incorrect information so you can keep working
QUESTION: What is NOT a function of a modern traffic signal controller? - ANSWER-Processing
when a vehicle has run a red light and informing the police
QUESTION: What was a major drawback with the first traffic signal controllers? - ANSWER-
Maintaining the mechanical parts
QUESTION: When did standardization of controllers become established in the United States
and Canada? - ANSWER-1970s
,Page 2 of 81
QUESTION: What was limited by the fourth proprietary connector used with the NEMA TS-1? -
ANSWER-the type of replacement model
QUESTION: Which type of controller utilizes a high speed data channel between all major
equipment to maximize the functionality and expandability of the controller assembly? -
ANSWER-NEMA TS-2 Type 1
QUESTION: What greatly reduced wire connections in the controller cabinet with the use of the
RS-485 with the SDLC? - ANSWER-Bus interface unit
QUESTION: What was the intent of developing the ATC specifications? - ANSWER-To have an
open architecture hardware and software platform for ITS application
Q; What organization has established requirements for PPE in certain working situations? -
ANSWER-OSHA/CCOHS
QUESTION: Which of the following certifications must be attained first? - ANSWER-Traffic signal
Tech. Level 1
,Page 3 of 81
QUESTION: Upgrades or revisions to the traffic signal are the responsibility of whom? -
ANSWER-professional engineer
QUESTION: What is NOT an example of documentation that can limit the liability of the
technician and/or agency? - ANSWER-NTCIP
QUESTION: What is the single most important focus that the field technician should have? -
ANSWER-safety
QUESTION: For many agencies, what is the least amount of technicians required to perform
work with an aerial lift? - ANSWER-2
QUESTION: Which agency developed a communications protocol for ITS systems, field devices
and software so basic functionality should be interchangeable regardless of the manufacturer? -
ANSWER-NTCIP
, Page 4 of 81
QUESTION: Before beginning work that requires workers or vehicles to be in or over the
roadway, what should traffic signal field technicians ensure is in place? - ANSWER-Temporary
traffic control (TTC)
QUESTION: What is NOT a common type of truck used for traffic signal maintenance? -
ANSWER-dump truck
QUESTION: Traffic signals can be attached to Mast Arms using which of the following?
- disconnect hangers attached to the mast arm which suspend the signal
- bracket that is rigidly mounted to the mast arm with a clamping device
- pipe mounts that screw into nipples installed directly into the mast arm
- ALL of the above - ANSWER-all of the above
QUESTION: Traffic signal supports are NOT used to display the following items: - ANSWER-
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