Evolution of turn signals

May 10, 20171 like395 views

The document traces the evolution of turn signals in vehicles from 1909 to 2016. Early turn signals from 1909-1929 involved hand-shaped lights or mechanical signs to indicate turns. The first modern directional signal was invented in 1914. By 1939, Buick introduced flashing turn signals controlled by a stick. By 1945, directional signals became standard on most American cars. Modern innovations include automatic self-cancelling signals and turn signals on motorcycles.

Automotive

1909
1925
EVOLUTION OF
TURN SIGNALS
1914
A device was patented so that it
was hand-shaped lights to
indicate to other drivers which
way a vehicle intended to travel.
The first modern directional
signal made by Edgar A. Walz, Jr.
1939
Buick introduced the “Flash–Way
Directional Signal" - a stick,
mounted on the steering column
and only flashes on rear lights.
1945
Directional signals were standard
in most American automobiles.
Florence Lawrence invented a
mechanical signaling device that
after a button was pushed by the
driver, a sign would pop up from
the rear bumper indicating
which way the car was turning.?
Evolution of turn signals from beginning
to nowadays.
1920 - 1930
No one used any kind of turn
signals.
Some used "trafficators" -
retractable semaphores.
1940
“Flash–Way Directional Signal"
also flashed on front lights.
1950
Turn signals become standard on
all passenger cars.
1973?
Turn signals become standard
on all motorcycles.
1929
Oscar J. Simler invented and
patented (again) a turn indicator.
1935
A flashing turn indicator was
invented is U.S.?
2016
Smart Turn System?was invented
- automatic self-cancelling system
for indicators, after every
completed maneuver.
SOURCES:
http://www.todayifoundout.com/index.php/2015/04/clicky-turn-signal/ ?
https://en.wikipedia.org/wiki/Automotive_lighting#Turn_signals ?
http://amhistory.si.edu/onthemove/collection/object_72.html

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