IMSA Traffic Signal Technician 1
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,Terms in this set (179)
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
IMSA 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 Where: London, England
attempt of When: 1868
regulating traffic Who: J.P. Knight, railway engineer
flow with a How: Featured rotating arms with
mechanical symbols indicating stop and go
signal? (where,
when, who,
how)
, Where: Salt Lake City
Pivotal When: 1912
milestone of Who: Lester Wire, Salt Lake City
traffic signal? policeman
(Where, when, How: First electric traffic signal with
who, how) red and green lights and buzzer to
guide vehicles
Where: Detroit
Significant When: 1920
breakthrough of Who: William Potts, Detroit police
traffic signal officer
(Where, when, How: Introduced concept of amber
who, how) (yellow) light, adding a crucial
buffer
African American inventor, invented
Garrett three position signal to add a
Augustus warning position (1923, patented).
Morgan Also invented a gas mask to
protect firefighters
Exam 2025 (Actual Exam) |
Complete Questions and Correct
Answers | Graded A+ | Verified
Answers | Newest Exam
Save
Practice questions for this set
Learn
Studied 7 terms
Nice work, you're crushing it
Continue studying in Learn
,Terms in this set (179)
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
IMSA 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 Where: London, England
attempt of When: 1868
regulating traffic Who: J.P. Knight, railway engineer
flow with a How: Featured rotating arms with
mechanical symbols indicating stop and go
signal? (where,
when, who,
how)
, Where: Salt Lake City
Pivotal When: 1912
milestone of Who: Lester Wire, Salt Lake City
traffic signal? policeman
(Where, when, How: First electric traffic signal with
who, how) red and green lights and buzzer to
guide vehicles
Where: Detroit
Significant When: 1920
breakthrough of Who: William Potts, Detroit police
traffic signal officer
(Where, when, How: Introduced concept of amber
who, how) (yellow) light, adding a crucial
buffer
African American inventor, invented
Garrett three position signal to add a
Augustus warning position (1923, patented).
Morgan Also invented a gas mask to
protect firefighters
