結果 : when was the traffic light invented in america
5:12

Invention of the traffic light by Garrett Morgan was in Cleveland in 1923

News 5 Cleveland
66,272 回視聴 - 7 年前
3:01

Who invented the traffic light and why?

Λsk Λbout Essentials
805 回視聴 - 3 年前
4:00

Garrett Morgan Traffic Light.Black Inventor.Black History Month.Deeper Than Read(Ep.1)

Deeper Than Read
104,722 回視聴 - 4 年前
3:52

History of The Traffic Light

History of Stuff
75,859 回視聴 - 7 年前
1:06

inventor of traffic light

GT 657
2,288 回視聴 - 3 年前

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7:35

Why were traffic lights invented?

Mystery Science
475,210 回視聴 - 2 年前
2:05

GARRETT MORGAN (Traffic Light Inventor) - Black History Month

The Wise Channel
128,972 回視聴 - 4 年前

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1:51

150 years since the world’s first traffic light – BBC London News

BBC London
37,161 回視聴 - 6 年前
10:35

The BLACK MAN Who Invented the Traffic Light! Garrett Morgan

The Black Excellence and Abundance Channel
32,027 回視聴 - 5 年前
5:52

Garrett Morgan For Kids - Traffic Light (Black History Animated)

Insightful Black History
106,606 回視聴 - 4 年前
0:25

The 3 Light Traffic Light Inventor Was A African American

Jacqueline McQueen
21 回視聴 - 3 年前
0:50

The man who invented the traffic light: Garrett A. Morgan -- Celebrating Black History Month 2024

WKYC Channel 3
2,701 回視聴 - 9 か月前
0:43

The Birth of the Electric Traffic Light

Actually Tech
481 回視聴 - 2 か月前
1:52

Why were traffic lights invented? Why Red light is used in traffic signals?

MangoSeries
295 回視聴 - 2 年前
0:17

Traffic Light Sequence

Theory Test Practice
63,056 回視聴 - 1 年前
0:11

The traffic light was invented by us

Guy24log10
1,884 回視聴 - 11 か月前
4:23

Traffic Lights Explained - Learn What US Traffic Signals Mean

Zutobi Drivers Ed
149,022 回視聴 - 2 年前