How do traffic lights work? 

I love this, thank you for sharing!

this is still how the light ccle works in Germany! This is just so much safer and more comfortable as well.

He did

Emergency vehicles don't have a remote control. They have a strobe on the vehicle that is not able to be seen by the naked eye, but is picked up by a sensor on the mast arm or span wire of the traffic signal. That sensor then tells the traffic signal controller to put the cross street into a red phase, allowing the emergency vehicle to safely pass through the intersection.

@@cjsebes thanks didn’t know

@@cjsebesSmarty pants

@@andrewgibb8846 The Smartiest.

Ah, a fellow U.S. Citizen.

jzak

New Jersey

lmao

It means the same here in the Dallas/Fort Worth area too!

Serbia? Haha

Yes, that's true even in India

I, a human assure you that humans(like me) will not be automated in the 22nd century.

Like robocop in battle mode

@@its_anonymous1289 no we wont . Only the stupid sheep who do whatever somebody they dont even know says . Even if they say it from 1000 miles away . They will run in line and shoot somthing in their blood stream that they have no clue how many chemicals are there within that needle

We learning how it works not it’s history

Garret Morgan didn't invent THE traffic light. He invented A traffic light. His 1922 invention looked nothing like the traffic lights we know of today. The lights we know today more closely resemble a signal designed by William Potts in1920. Morgan did make out pretty well, though. General Electric bought the rights to it, netting Morgan a sweet $40,000. That's equivalent to about $600,000 today. Morgan should be more revered for his Safety Hood invention, which would become the gas mask, literally saving lives in a mine explosion.

Let me guess you could never pass the are you a robot security portion hmmmm ROBOT!?

what? there’s nothing wrong with it