Exampromax - Stuvia US 2026/2027
1
IMSA Traffic Signal Technician 1 Questions
and Answers and Graded
IMSA
Correct Answer
The International Municipal Signal Association (IMSA) is
the
oldest known association of its kind in the world. The
organization originated in 1896 and counts Thomas A.
Edison
© 2025 Assignment Expert
and the Edison Electric Company among its esteemed
members. Today, IMSA certifies tens of thousands of
technicians and stands as the most regarded name in public
safety.
First recorded attempt of regulating traffic flow with a mechanical signal?
(where, when, who, how)
Correct Answer
Where: London, England
When: 1868
Who: J.P. Knight, railway engineer
How: Featured rotating arms with symbols indicating stop
and go
Pivotal milestone of traffic signal? (Where, when, who, how)
Correct Answer
, Exampromax - Stuvia US 2025/2026
2
Where: Salt Lake City
When: 1912
Who: Lester Wire, Salt Lake City policeman
How: First electric traffic signal with red and green lights
and buer to guide vehicleszz
Significant breakthrough of traffic signal (Where, when, who, how)
Correct Answer
Where: Detroit
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When: 1920
Who: William Potts, Detroit police officer
How: Introduced concept of amber (yellow) light, adding a
crucial buffer
Garrett Augustus Morgan
Correct Answer
African American inventor, invented three position signal
to add a warning position (1923, patented). Also invented a
gas mask to protect firefighters
NEMA
Correct Answer
National Electrical Manufacturers Association - Founded in
1926, neutral forum of members made up of business
, Exampromax - Stuvia US 2025/2026
3
leaders, electrical experts, engineers, scientists, technicians.
ANSI-accredited Standards Developing Organization
IMSA
Correct Answer
International Municipal Signal Association
NESC
Correct Answer
© 2025 Assignment Expert
National Electrical Safety Code - general requirements,
safety rules for installation and maintenance of electric
supply stations, equipment, communication lines, etc
Correct Answer
California Dept. of Transportation
ITE
Correct Answer
Institute of Transportation Engineers
ATCC
Correct Answer
, Exampromax - Stuvia US 2025/2026
4
Advanced Transportation Controller Cabinet
ATC
Correct Answer
Advanced Transportation Controller
SDS
Correct Answer
© 2025 Assignment Expert
Safety Data Sheets
Purpose of Safety Data Sheets
Correct Answer
Offer safety information for chemicals you may use in your
work environment, 16 sections, UN adopted Globally
Harmonized System of Classification of Labeling &
chemicals in 2003
NEC
Correct Answer
National Electrical Code Handbook - provides detailed
interpretations etc to accompany the National Electric
Code. Published by NFPA - National Fire Protection
Association
1
IMSA Traffic Signal Technician 1 Questions
and Answers and Graded
IMSA
Correct Answer
The International Municipal Signal Association (IMSA) is
the
oldest known association of its kind in the world. The
organization originated in 1896 and counts Thomas A.
Edison
© 2025 Assignment Expert
and the Edison Electric Company among its esteemed
members. Today, IMSA certifies tens of thousands of
technicians and stands as the most regarded name in public
safety.
First recorded attempt of regulating traffic flow with a mechanical signal?
(where, when, who, how)
Correct Answer
Where: London, England
When: 1868
Who: J.P. Knight, railway engineer
How: Featured rotating arms with symbols indicating stop
and go
Pivotal milestone of traffic signal? (Where, when, who, how)
Correct Answer
, Exampromax - Stuvia US 2025/2026
2
Where: Salt Lake City
When: 1912
Who: Lester Wire, Salt Lake City policeman
How: First electric traffic signal with red and green lights
and buer to guide vehicleszz
Significant breakthrough of traffic signal (Where, when, who, how)
Correct Answer
Where: Detroit
© 2025 Assignment Expert
When: 1920
Who: William Potts, Detroit police officer
How: Introduced concept of amber (yellow) light, adding a
crucial buffer
Garrett Augustus Morgan
Correct Answer
African American inventor, invented three position signal
to add a warning position (1923, patented). Also invented a
gas mask to protect firefighters
NEMA
Correct Answer
National Electrical Manufacturers Association - Founded in
1926, neutral forum of members made up of business
, Exampromax - Stuvia US 2025/2026
3
leaders, electrical experts, engineers, scientists, technicians.
ANSI-accredited Standards Developing Organization
IMSA
Correct Answer
International Municipal Signal Association
NESC
Correct Answer
© 2025 Assignment Expert
National Electrical Safety Code - general requirements,
safety rules for installation and maintenance of electric
supply stations, equipment, communication lines, etc
Correct Answer
California Dept. of Transportation
ITE
Correct Answer
Institute of Transportation Engineers
ATCC
Correct Answer
, Exampromax - Stuvia US 2025/2026
4
Advanced Transportation Controller Cabinet
ATC
Correct Answer
Advanced Transportation Controller
SDS
Correct Answer
© 2025 Assignment Expert
Safety Data Sheets
Purpose of Safety Data Sheets
Correct Answer
Offer safety information for chemicals you may use in your
work environment, 16 sections, UN adopted Globally
Harmonized System of Classification of Labeling &
chemicals in 2003
NEC
Correct Answer
National Electrical Code Handbook - provides detailed
interpretations etc to accompany the National Electric
Code. Published by NFPA - National Fire Protection
Association
