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Traffic Lights and Signals

Parent Category: Rules of the Road
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.
they didnt have traffic lights back then sorry :/
it was the person of jesus and he loved people and made a stop light invention...
because there were too many accidents
A green light usually last a minute to two minutes.
Analogy indecipherable, since the "cars stopped at a traffic light" are performing no actions. The analogy of cars controlled by a stoplight is often used to describe the impact of control devices on flows in a pipeline where the stoplight acts as a valve periodically releasing a fluid. The...
You may turn in the direction the arrow is indicating. No other maeuvers are allowed.
  The national standard for yellow lights is to allow one second for each 10 mph of the posted speed limit. So in a 55 mph posted zone, the yellow light should last at least 5.5 seconds. Recently a number of cities have been busted for shortening the yellow light times and collecting millions of...
1. If you are directed to by a police officer 2. If you are part of a funeral procession3. If you are part of a parade
There isRed for stopYellow for slowGreen for Go
If you are asking what the height of a traffic light above the street is, that is usually set by the specifications of the individual states or municipalities, and usually designed to be high enough to clear the tallest oad that can be lawfully transported on the highways without special permit.
If you are approaching it and have time to apply your brakes before it turns red, apply your brakes and come to a stop. If it changes as you are too close to it to avoid slamming on youir brakes, for safety's sake pass through it - - but DON'T go through if it's going to turn red as you arrive at...
it means slow down or jail. that's all get it?
The traffic light, as we know it today, actually went through a few phases of invention. 1868 - JP Knight created a signal based on red and green gas lamps. It took an officer to operate it. It exploded about one month later and injured the officer on duty. 1912 - Lester Wire invented the...
%DETAILS%    == Answer ==   Hey Ben==Have the engine tuned up and have the motor and trans supports checked. GoodluckJoe 
Unless the lane is specifically marked as "Right turn permitted without stopping", yes. In any case you would still be required to yield.
Check out the related link to get a theoretical overview of the  operation of traffic lights.
It did change the wrold alot because we didnt have traffic lights and there would be alot of accidents and when they invented the traffic light they could get around easier and it made it safer
  The state law will probably say a 'safe distance' one rule I've always used, (and it's a good one), is stay back far enough that you can clearly see their back tires where they touch the ground. This will usually provide enough distance. You could check your local rules of the road to see if...
Well, the first one that was used was in 1912 in Salt Lake City by  Lester Wire, but the first one permanently installed was probably  one in Cleveland, Ohio, in 1914. It was installed by the American  Traffic Signal Company. These first ones only had red and green  lights (like previous ones...
On December 10, 1868, the first traffic lights were installed outside the British Houses of Parliament in London,
If a traffic light breaks most cities will assign a traffic cop to regulate traffic until the light can be fixed.
Yes, it was. The traffic light was first invented and used on December 10th 1868, this light unlike modern lights was hand operated by a police officer, which made it far less practical than that of the modern light. Eventually in 1912, the first known modern electric traffic light was used, this...
The Red Light Is Telling Everyone To Stop. The Green Arrow Is Telling You It Is Ok To Turn At That Time (Which Ever Way The Light Is Pointing).
It's either EGR or idle control valve. Try cleaning the throttle body and the idle control valve first.
LED light source stability and energy saving
It changed history because it kept people from getting into car crashes
  Coils of wire are buried under the road's surface to detect the metal in the car. Next time you are riding in a car look and you can usually see the lines in the asphalt where cuts were made to bury the wires. The signal from the detector is sent to the computer that runs the lights so it...
i do not have a clue what your talking about! why not define what you mean?
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).
  My car is a 1997 Mitsubishi Galant, and when it was idle it used to do the same thing, I was told it might be time to change the TPS Sensor (Throttle Position Sensor). I still need to change it, but what I figured out, is that when you let the car fully warm up, when the needle is as close to...
I probably would be if the app actually was real.
The lowest light on a traffic signal is green. Some cities use traffic lights that are not arranges top to bottom but rather side to side. In this event the green light is usually the furthest to the right.
You need a traffic light because they let people need to know to stop or go.
Fine because they are traffic control cameras
No. A traffic light is a man made object, not part of the natural environment.
Primarily, the purpose is simply to facilitate the safe movement of cars, avoiding collisions. In some cases, however, it seems the purpose is to "catch" some not cautious motorists and sock them with traffic tickets and fines to raise money for government.The latter goal is obvious when the private...
If you are in the turn lane and are going to turn, then you don't need to stop, but you should look both ways first to make sure that no one is coming at you. If you aren't in the turn lane and you are going to continue going straight, then you need to stop and wait until the light turns green. NOTE...
The road leading up to these traffic lights will be split into filter lanes: traffic in one lane goes left, another lane is for traffic wanting to travel straight ahead, and another lane may be for vehicles wishing to go right.Let's say the green arrow points left. It means only traffic that wants...
Small scale as in small Hot Wheel car small. It needs to be really simple to about kinda simple. I really just need the light itself, I can make the frame. To make the bulbs I was thinking LEDs, but are suggestions are taken into consideration.
Proceed with caution.. ~Bemnestle
You will need a sharp knife or blade to cut the thermocol (the  knife will cut through the thermocol better if it is heated) . Then  all you need to do is cut it into the size you need and paint it.
Yes. Basic rule of driving: You must stop at a red light. Yes, that means a flashing red light as well!
this depend on the way where you want to place your design you have to design a timing circuit first.(u can use IC 555 ) after that according to your variable and expression give this output of timing circuit to LOGIC gates serially after every one minute the output of timing circuit will change and...
Nothing. there is no blue light.
It does not depend on the speed of your car. It depends on whether you are color blind or not..!
The car that reached the stop first. Then the second car that reached the stop. Taking turns as they arrive. Same way at a four way stop.
it means you may go straight ahead or turn except where signs prohibit turns and traffic and pedestrians alright in the intersection must get out of your way.
If you can stop within reason, you're expected to, in any state.
there is no traffic lights. only four in the capital.
Traffic light colours have different shapes in order to inform the colour blind what colour the light is.
  depending on where you live. In Canada, we treat them as if it was a 4 way stop sign.
Garrett Augustus Morgan, Sr. is credited with having a patent for a non-electric, T-shaped pole traffic signal in 1923. Although Morgan is credited with a patent there were already numerous traffic signal systems patented and in production.
the traffic light was invented because back in the day people didnt know what to do when driving and cars were new and to prevent people from crashing and accidents they invented the traffic light
it was made in the US by a man who was British
The basic answer is 'no' - unless of course the Queens Messenger is being driven by someone who can legally pass through a red traffic light - i.e. a Police Officer in legal pursuit of a suspect.
Traffic lights are used at intersections or other locations where Stop signs and Yield signs are no longer able to manage traffic flow. Traffic signals tell drivers when it is safe to proceed upon a roadway and when they need to stop. They also tell drivers to go in different directions, such as...
== Answer ==   It depends on the laws in your state or jurisdiction. The state I live in does not allow photo tickets to become part of your official driving record.   == Answer ==   Why would it matter? If you went thru the red light, you are guilty of a driving offense, right? So of...
Those are LEDs (light emitting diodes). They are used because they 1) use far less electricity than incandescent bulbs, and 2) they are brighter (thought they actually do not produce the same lumen as regular incandescent hence the large array) and 3) they have a much longer lifespan than other...
Cleveland, Ohio Actually the first electric traffic signal was invented in 1912 in Salt Lake City by a policeman. It had two colors, red and green, and was installed at 200 South and Maine St. in the city.
People are allowed to turn in the direction the arrow is pointing, but they can not go straight across the road, that should really be common since.
Yellow, then red is the patterns of the traffic lights.
The term "act of God" is usually used for bigger events than a sign being blown off a post and onto a car. Earthquakes and hurricanes are described as acts of God, in the sense that they are not caused by human beings. In the case of the sign coming off its post, I might argue that had the sign been...
Amber (or red) in a traffic light sequence means "stop," put the brakes on! Green means "go;" and yellow signifies that the traffic light is about to turn red (or amber), so you should start to slow down and prepare to stop.
traffic lights were designed to control the traffic flow in largely populated areas.
The manufacturer of the controller often has updates of circuit boards, firmware, and so forth. Modification of timing, cycle lengths, and so forth is often done via your office computer (with the appropriate program). Some controllers these days can be controlled via Blutooth and an on-site laptop...
  don't have an absolute answer, but mine started doing that last summer.    Most often it would shake and shudder and worry me that it would stall out.    But never got that bad.   Then after 7 months of that, noticed some steam coming out the front end....
I recall that NY State published a new rule (maybe 20 yrs ago) which stated that you should allow the first car facing you to make a left hand turn when the light turns green. Don't know it that is still in affect.
It means you can turn whatever direction the arrow is pointing but you cant go straight.
Answer . \nA vacum leak is suspect here. Trace your vacum hoses from your pcv valve (located on the valve cover) back and check for a vacum leak
There are no red light cameras in Tewkesbury apart from the A4019. Hope this solves the problem
The very first traffic light was a revolving gas lantern with red and green lights installed in a London intersection in 1868, before the advent of automobiles. A later version of the traffic light based on railroad signals was installed in Detroit, Michigan, in 1920.
Actually the most intelligent device in the world is the thermos bottle. All it does is keep hot fluids hot, and cold fluids cold -- but how does it know which to do?
It tells you to proceed with caution.
It means that wherever it happens to be situated along the roadway (i.e.: intersection - crosswalk - emergency entrance/exit - etc) that you should come to a complete stop for it.
A red light - steady or flashing - means STOP. A steady amber light means Caution - signal about to change. A flashing amber light means SLOW DOWN.
red light is used in traffic lights because red light has a "longer wavelength" than other colours
The green arrow is what is often known as a "filter." This means vehicles are permitted to proceed with caution in the direction indicated by the arrow.
Red, yellow, and green. Green means go. Red means stop and yellow means slow down.
Unless you are referring to a comnmercial vehicle whose height would obscure the signal to approaching traffic, you only need comply with normal parking restrictions which may, or may not, be posted.