I wonder about 8years since I moved here thank you so much

Wow... Engineering is awesome

Very over complicated but I still very much appreciate this video! I was wondering this today while driving and realized that, while I was always told how it works, I wanted to see for myself!

@noname-zi9xm

Ай бұрын

not really over complicated it's explaining it step by step

Sat at a light for 4 minutes at 3am in Connecticut one morning 🥲

@ByronTang

10 ай бұрын

Detectors were probably malfunctioning/broken

@johnm.castillo3163

8 ай бұрын

yeah but they'll never get that time back :/ the CITY can pay us??? can they?? @@ByronTang

@Jagadeeshram01

Ай бұрын

You might be dreaming at 3am

@TEMPLE7D

Ай бұрын

@@Jagadeeshram01 lol 😂 no, like stated above, the detector was probably broken. A line of 2 cars or more is required for that light to change. Otherwise if you’re alone, you’ll be there for a while. 😂

Good one Byron. Love your insightful knowledge about traffic management. One more subscriber for you.

@ByronTang

2 жыл бұрын

Thank you, Bipin Adhikari. I really appreciate it!

I liked this video just for the sound effects

Thanks Byron, this is so cool!🚦

Omg ,😂thank youuuuu so much..God is good..

Great video!

All this infrastructure just for one intersection? Excluding the sensors, one would think something of the order of a Raspberry PI or 2 would be enough to process the signals and control the lights accordingly.

@ByronTang

10 ай бұрын

Although you could program something like that to work like a traffic signal controller, field equipment are usually manufactured to very specific industry standards for reasons of safety, durability, etc. For example, most of the ones I commonly have worked with are NEMA standard.

I'm a Traffic signal tech NEMA TS1/TS2

The green doesn’t go through transfer relays. You also pointed to the BIU’s at that same moment.

Can we ask construction workers for a traffic light if it is taken down and on the ground?

@ByronTang

Жыл бұрын

You can ask, but I’m pretty sure they won’t let you take it. They are also a lot larger close up than most people realize!

Can you go over the opticom light sensors that change for emergency vehicles

VDOT has more traffic signals (red lights) per non-interstate highway mile than any other state in the U.S. Additionally, when VDOT finally separates the grades, it insists on building massive, sprawling Cadillac interchanges when a Ford or Chevy would be adequate and, to add insult to injury, the shitass agency STILL clutters all supporting side roads and streets with traffic signals

@ByronTang

22 күн бұрын

Interesting. Traffic signals are expensive to build and maintain.

@fairfaxcat1312

22 күн бұрын

Yep and there ought to be investigations to determine whether any VA officials are receiving any kickbacks from suppliers.

Hi Byron, this process will be managed by Electrical engineers or Traffic?

@ByronTang

2 жыл бұрын

Hi! This process is mostly managed and maintained by electric engineers/signal technicians. As a traffic engineer, I am usually involved more with settings in the controller and not as much with the other components. My job still requires me to have knowledge of how things work and what items to procure in certain situations.

Thanks for educating us. I wish these worked in texas. We have traffic monitoring cameras etc.... but no matter which way youre going or if theres ZERO cross traffic, the lights will still make you sit there and idle gas away for at least 45 seconds. Smh

@ByronTang

10 ай бұрын

That strange, leads me to believe something could be wrong with the detection cameras. Either that or the signals are coordinated and it is holding green for one road.

What can I add to my car to give me green

Hello Mr Tang. My name is Gideon Zamani, a 500 level student. I have a project I am currently working on and I feel your guidance as a traffic engineer will be of utmost importance and greatly valued. The project is a "4-Way Traffic Control using Machine Learning". I would appreciate your reply and means to reach you as soon as you get this and are free.

@ByronTang

8 ай бұрын

Hi Gideon, I saw you reached out on Twitter/X. I sent you a message!

Can they program a plate number to that system for change lights

@ByronTang

Жыл бұрын

You are talking about having a specific plate number trigger the lights to change? Nope. Usually mechanisms like that rely on extra sensors/communications equipment to be installed on the vehicle (and intersection). For example fire trucks and buses could have that equipment. But it’s not done for regular vehicles.

How far out from the cross walk is the detector? Or how far is too far where you will no longer be detected?

@ByronTang

22 күн бұрын

There is some variation, but a car stopped at the stop line without going over it too much should be more than enough to adequately get detected by the stop bar detector. Some traffic signals have multiple detectors in one lane and can detect further back.

Wow if only it fuckin worked and wasn't stopping 30 cars moving 45mph to let 1 car go and sometimes none. Every damn time

These are a pain in the ass if you ride a motorcycle! Just put them on a timer

@ByronTang

10 ай бұрын

A motorcycle should have no problem triggering the detector. Just need to make sure it is over it. Most people don’t like putting them on a timer because then it will give green to a direction with no vehicles waiting.

@rcruzthomas

7 ай бұрын

Just like Las Vegas, where most of the lights are on a timer and red light running is rampant.@@ByronTang

@Roommate_WSMB

7 ай бұрын

@@ByronTang I’m sure in most cases this is true, but there are several lights here in California that I will move all around an area and the light will never change. Due to this I either just have to turn right and hope the next light registers, or pop out my kickstand and run to push the cross walk button.

@timstram

7 ай бұрын

​@@Roommate_WSMBit's not a "plate" it's the wires in a square that detect the vehicle. Drive over the cut marks in the pavement.

@Roommate_WSMB

7 ай бұрын

@@timstram All im getting at, is that I see the sensor lights all over, and most of the time they work just fine, but there have been many instances where no matter how I am configured on this road, I cant seem to trigger the light.

Will the underground detectors be usually under concrete or asphalt? Thank you.

@ByronTang

6 ай бұрын

Asphalt usually, but there could be less common situations for them to be under concrete (like a driveway)

@ElevatorWasher5000

5 ай бұрын

@@ByronTangsome lights in my city are just on timers

How does it detect your car? Are the sensors triggered by weight or what?

@ByronTang

7 ай бұрын

Magnetic

Are these for red light cameras as well ??

@ByronTang

11 ай бұрын

Red light cameras mostly operate separate from the traffic signal. The ones I’m familiar with are automated and record the vehicle and red light violation.

Why doesn’t it work all the time with a motorcycle? Thanks

@ByronTang

Жыл бұрын

Hi! It could depend on a number of reasons. The sensitivity of the detector may need to be adjusted. The motorcycle may not be in a good spot to trigger it.

@gs-nt6nf

Жыл бұрын

@@ByronTang they need to make it work 100%. Dangerous situation could happen.

How does it detect though? Is it weight, or magnetic, camera?

@ByronTang

9 ай бұрын

If there are loops in the ground it is magnetic. If there is a video detection camera on the signal mast arms, they detect by algorithms detecting differences in pixels. Some video cameras are augmented with additional sensors (like radar) to provide even stronger detection capabilities.

@tortuga7160

9 ай бұрын

@@ByronTang thanks! its very interesting

Incredbily inefficient. Idle time is highly overlooked.

Bro there is now 666 likes

Sir can i have your email address

@ByronTang

10 ай бұрын

Hi! You should be able to see my email address if you go to my channel page and click on "About" and then click on "View Email Address".

@kamrulbabu2625

10 ай бұрын

@@ByronTang Thank you Sir