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Traffic Lights and Signals
Traffic lights are devices that allow for alternating flows of traffic. They signal to drivers when it is time to slow down, stop, or go. They help to ease traffic congestion in highly traveled areas.
500 Questions
How long does pedestrian light show?
Asked by Wiki User
That depends on the cross-walk. The question of how much time allowed to cross is answered by how much road does one person have to cross. For crossing 4 lanes of road the person may be allowed 25-35 seconds to cross. For 2 lanes that time may be cut in half.
All of that is set by the traffic department of your city or county.
What should you do when you approach an intersection and the traffic light changes from green to yellow?
Asked by Wiki User
What does a flashing red light mean on an airfield atc tower?
Asked by Wiki User
It is a warning light to pilots in poor visibility that there is a tall building there
What does the triangle with the exclamation point signal on your car mean?
Asked by Wiki User
Most of the time is means the traction control on the vehicle is turned off. Turn it back on and the light will go out.
Are you allowed to leave roadway to avoid a traffic light?
Asked by Wiki User
Nope, it is unlawful, you cannot enter a parking lot and exit on the street you were going to turn right on at the traffic light. You cannot enter a parking lot unless you were going to obtain any kind of service.
What is the reason for flashing red traffic lights?
Asked by Wiki User
Flashing red lights may be permanent or temporary (e.g. when the programmed sequence fails).
A flashing red light means STOP, then proceed when safe.If it is a 4-way flashing red, cross traffic will also stop, and the intersection becomes identical to one with stop signs. This is a safety feature in some programmed signals. If only one direction has the flashing red (such as a road that intersects a busy highway), the traffic entering the highway must stop, and never has the right-of-way.
* Some international traffic signals use a flashing red in place of steady red, to attract the attention of drivers where there is a profusion of commercial lights.
What are the sequences of traffic light duration i.e. how long is the amber light before the light turns red?
Asked by Wiki User
Most(?) highway departments set their amber caution-light sequence so that there is one second af amber for every 10 mph of posted speed on that road (i.e.: 50 mph posted speed = 5 seconds of amber).
How long does a stop light last?
Asked by Wiki User
Variable depending on traffic, traffic controllers can adjust timing in a direction to give preference when it backs up, also some of it is automatic based on sensors under the pavement
What should you do if you see a flashing amber light near entrance to a river lock?
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What are ways of managing traffic?
Asked by Wiki User
Roads should be widened, and traffic lights should be in full working order at all times. Carpool lanes can also ease the flow of traffic.
Which vehicles must a driver give way to when entering a roundabout?
Asked by Wiki User
Depends on the side of the road you drive. In the UK we drive on the left (& go round round abouts clockwise) and at a round about the law requires you to give way to all traffic (that is all vehicles) coming from your right.
And here in the US, it is those vehicles coming from the left.
When a traffic light shows both a red light in a green arrow in the direction you wish to turn you?
Asked by Wiki User
If the green arrow shows for the direction you want to turn then you obey the green arrow, the red light is for all other traffic. The green arrow basically overrules the red light for the direction of the arrow.
How many seconds before proceeding at a green traffic light?
Asked by Wiki User
You don't have to wait any amount of time when the light turns green, when the light turns green that means the intersection is safe for you to proceed.
How does the human eye detect the colors of a traffic light?
Asked by Wiki User
There's nothing really special here, it's simply the color of the light that enters our eyes is how we see the traffic light.
What does a green traffic sign means?
Asked by Wiki User
Green traffic signs usually indicate directions. Exit and Entrance signs for the expressway, distances to cities and towns, mile markers, etc.
