How do traffic lights work?

Рет қаралды 162,466

3 жыл бұрын

Traffic lights are an essential part of our road infrastructure, but have you ever wondered how they work? 🤔
Traffic signals are those three lights that tell you when to stop, when to go, and when to proceed with caution. If these traffic lights weren't used, our intersections would be chaotic! 🧐
Watch our video to discover how traffic lights work and how they are made!😁
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#engineering

Пікірлер: 63

@jimmyhuesandthehouserocker1069 2 жыл бұрын

Back in around 1960, in the last few seconds of the red light before it changed to green, the yellow light came on, so drivers could shift their manual transmissions into gear and be ready to go. Also, near the end of the green light cycle, the yellow light then came on. The yellow and green were both on at the same time. Sometimes in small towns, the go light was blue. My Uncle Cap told us kids, there was a little man who lived inside the signal, who changed the lights and Santa brought him new light bulbs on Christmas

@st.commodus1437 2 жыл бұрын

I love this, thank you for sharing!

@KriegerT 2 жыл бұрын

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

@ehenyor Жыл бұрын

The US traffic light system needs a MAJOR overhaul. I appreciate how the video mentioned lights works in tandem, and although they do at intersections, there are many lights along a street that do not. The outcome? Red light after red light after red light... We need smart traffic light systems that work in a network, going beyond what was described in the video. (Thanks for the info, by the way!)

@talknonsense85 3 жыл бұрын

Please add a "How traffic lights should be used" video for my country.

@MikinessAnalog 3 жыл бұрын

You forgot to mention some emergency vehicles (police, fire and ambulance) may also have a remote control to change the light when approaching them.

@Tisthenuke 3 жыл бұрын

He did

@cjsebes 2 жыл бұрын

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.

@MuyebaA 2 жыл бұрын

@@cjsebes thanks didn’t know

@andrewgibb8846 10 күн бұрын

@@cjsebesSmarty pants

@tobibobibo 3 жыл бұрын

Its not weight sensors, its inductive loop sensors…

@carll02alire 3 жыл бұрын

In my country, green means honk your horn as loud as you can and be an asshole, yellow is to go faster to reach the intersection before it turns red, and red means go if there are no enforcers to see you.

@VEE0034 2 жыл бұрын

Ah, a fellow U.S. Citizen.

@robertkennedy1666 2 жыл бұрын

Why do lights turn red for me with no one else approaching intersection? I don't know why but I shoot them out and go anyway

@gibanica87 3 жыл бұрын

Yellow light before red, in Serbia doesn't mean stop but speed up :)

@HomelessPank 2 жыл бұрын

New Jersey

@ahmedalex4937 2 жыл бұрын

lmao

@asphaltgypsy868 2 жыл бұрын

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

@justinianthegreat154 Жыл бұрын

Serbia? Haha

@Det.Ash12 Жыл бұрын

Yes, that's true even in India

@sinister_ray159 Ай бұрын

I always thought that the traffic lights are worked by humans when they control is by going red,yellow or green 😂

@alexmarty6138 3 жыл бұрын

Starts at 1:38

@lostplug Жыл бұрын

jzak

@balticstain7150 2 жыл бұрын

Unfortunately people who operate traffic lights still get very wrong, allot of traffic signals aren't synchronised with each other especially on long continueses roads.....

@smitakiranparulekar7025 3 жыл бұрын

very informative

@alimadi9053 3 жыл бұрын

Underated kept it up

@vdd1101 2 жыл бұрын

Thank you!

@a2bps Жыл бұрын

Thats how they bait you and giving you a fat ticket 🎫! Never know how they do it but they have control system!

@anuragtumane5227 Жыл бұрын

Here is something which traffic lights which a lot of people did not know before.

@aFan_1of1 Жыл бұрын

They are far behind proper traffic light efficency. The city planners and engineers agree to make the road lights as inefficient as possible in order to create "compunded stresses" on the roads.

@HansMcc1984 2 жыл бұрын

Very nice video.

@jasonervoes1326 8 ай бұрын

I disagree with the end of traffic lights. They never ever should've come out with self driver less cars in the first place. They don't even know what's going on.

@aussie8114 6 ай бұрын

Running a yellow light could be reduced if drivers were educated correctly on the road rules. You must stop on a yellow light if it is safe to do so. Anyone speeding up when they clearly could and should be braking scores themself a $1,000 fine.

@MandeepSingh-mq6qu 3 ай бұрын

This video teaches me very good

@Bullonearth 5 күн бұрын

In India people love to break traffic signals

@coryzeke3771 Жыл бұрын

The main reason for road rage 😤

@giancarlo_rc 3 жыл бұрын

_In the 20th century:_ *Traffic lights* were automated _In the 21st century:_ *Cars* are automated _In the 22nd century:_ *Humans* will be automated?.... xD I can't sleep at nights haha

@its_anonymous1289 3 жыл бұрын

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

@vhumpy364 3 жыл бұрын

Like robocop in battle mode

@mobmob5944 Жыл бұрын

@@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

@matthewchang5701 2 жыл бұрын

Interesting

@Andy-dp3hg 2 жыл бұрын

Walk,Bicycle, motorcycle, cars, airplanes when passing intersections Y have to be following the traffic laws. Respectively I am

@goodguy4607 3 жыл бұрын

Thing that we all have seen in real life 😅😅😅

@its_anonymous1289 3 жыл бұрын

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

@justrandomthings319 3 жыл бұрын

You should also mention that Garrett Morgan was the inventor of the traffic light. 🙄

@its_anonymous1289 3 жыл бұрын

We learning how it works not it’s history

@cjsebes 2 жыл бұрын

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.

@kabali0079 3 жыл бұрын

Unless somebody just ask google What is traffic light?

@imfrbetter 3 жыл бұрын

Cool😉😉😉😉

@yongchen4158 Жыл бұрын

Why traffic light timer 30 seconds not a minute

@muzamilzaman7463 Жыл бұрын

Which Algorithm they use ???

@janinealilin-zw2sj 2 ай бұрын

please copy the cebu city design. ty

@TransportSimulatorNationTSN 3 жыл бұрын

No we need traffic lights too much crazy people on the road.

@AshBlossomWorshiper Жыл бұрын

TIL there isnt a dude controlling traffic

@TheRewindKing Жыл бұрын

I hate traffic lights!

@Getmilkk Жыл бұрын

I’m telling something is going on in Ohio

@godofflames6693 3 жыл бұрын

Rip grammar for the title

@illegalsanity8416 3 жыл бұрын

what? there’s nothing wrong with it

@user-wh9my5ld2b 7 ай бұрын

Its NOT really its started in United states by a black man

@Mike-wt7jq Ай бұрын

If there is ever an end to traffic lights in the future, could we please get a few decommissioned NYC DOT traffic lights with double guywire mastarm sent to the traffic light collection hobbysts approved by the NYC DOT. 😂😂😂😂😂😂😂