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When Do You Use The Double Light Signals

Use turn signal when pulling out of a parking spot?

You use your signal whenever you turn your wheel to make a turn or change of direction. In to, out of parking lots, parking spaces, one lane to another, backing into a parking space, etc. etc. The signals are there so you can tell other drivers on the roads and lots know what you are going to do.

What do the signal lights (green, yellow, red and blue) on the New York City subway system mean to the train operator?

Blue lights are not actually signals; they indicate the location of hardwired emergency telephones and in some cases emergency exits within the tunnels. Actual train signals work as you would expect:Red: Stop. This means there is a train in the section of track (block) ahead. The NYC subway also uses failsafe tripcocks which will trip a train's emergency brakes if it attempts to pass a red signal. When the signal clears, the trip-arm on the track retracts and the train can pass.Yellow: Proceed with caution. The next block is clear, but the following signal is red. Green: All clear.Train operators can use a manual bypass key to proceed past a red signal (with dispatcher permission) in the event of a malfunction. Additionally, ahead of track switches, you will find a stacked set of signals like this with two sets of red/yellow/green arranged vertically. The top set of signals tells you if it is safe to proceed; the bottom set tells you how the switch is set. The combinations you'll see are:Red over red: Stop. The switch is set such that if you proceed you will end up in a block that is occupied by another train.Yellow over yellow: Proceed with caution, switch set to diverge.Yellow over green: Proceed with caution, switch set to straight.Green over yellow: All clear, switch set to divergeGreen over green: All clear, switch set to straight. Notice that there's no such thing as red over yellow or red over green. If the top signal is red, they both must be. This prevents the possibility of dangerous confusion.There are some other miscellaneous signals that you might see on occasion:Double red - do not enter. This is typically used on switches that are only set up for traffic in one direction. This ensures that a train can not enter going the wrong way.Red/yellow over white - ("lunar"). This is a timer signal. It will clear to green after you achieve the posted maximum speed. If you go too fast it will trip your brakes. There are some others but those probably cover 99% of what you'll see riding the subway.

1972 cutlass turn signals dont turn on?

I am not a mechanic, but used to dabble a little in auto repair. Double check the tail light bulbs to make sure the brake lights turn on. Sometimes the brake & turn signal light filament burns out, but the tail light bulb will still work. Make sure all of the flashers are working, check the hazard flasher & turn signal flashers.

What is the difference between a single pole and dual pole light switch?

There are a lot of confusing and incorrect answers in this thread.The best way to sort this out is to search the Internet for “single pole double throw” and other combinations. Here is a site that explains 4 permutations:Single Pole Single Throw (SPST) SwitchDouble Pole Single Throw (DPST) SwitchSingle Pole Double Throw (SPDT) SwitchDouble Pole Double Throw (DPDT) Switch

What does a blinking yellow traffic light signal symbolize?

As others have noted - it means proceed with caution or in some cases, yield.A new use for flashing yellow is the flashing yellow left arrow - for drivers turning left, this means yield to oncoming traffic and proceed only when it is clear to do so. This is the same meaning as a green ball indication, but is becoming more widely used for a couple of complex technical reasons.

What does a flashing yellow traffic signal represent?

Note: My answer applies to the US. Other countries may have similar laws, but this is primarily about the US.Depends, are well talking about ball indications (the circle ones) or arrow indications?For the ball (circular) indications, a flashing yellow is used to attract attention to where a dangerous condition might be, such as a busy-ish intersection that isn’t busy enough to warrant a 4-way stop or a full traffic light. They can also be used to help draw attention to warning signs, crosswalks, and other regulatory signs (such as signals that warn of schools that are letting in/out, traffic lights that are ahead, and/or ramp meters that aren’t always on).[1]For arrows, it kinda depends on the situation. If it’s a warning beacon set-up (such as below), it may be warning on a hazardous or an otherwise unusual turn.Google Street-view link of the curve this signal is at.The other situation a flashing yellow arrow indication will be used is the appropriately-named “Flashing Yellow Arrow” signal (shown below). These signals are replacing the older doghouse/”inline-5″ signals in most parts of the country. They work the same as these older signals (except they are more flexible in how they can be used), but use a flashing yellow arrow instead of a green ball indication.[2] But the flashing yellow arrow pretty much means the same thing as the green ball (or flashing red ball, if you’re from Michigan): yield to oncoming traffic when making a left turn.Google Street-view link of the intersection this signal is at. If you go back in time on street-view, you can see the doghouse signal that this signal replaced.I hope this answers your question, but if you need me to clarify anything, please let me know!Footnotes[1] Chapter 4L - MUTCD 2009 Edition - FHWA[2] Chapter 4D - MUTCD 2009 Edition - FHWA

My Turn Signal makes a strange noise?

you say you have checked all the light bulbs? Double check when you turn the wheel. engine running. may take two people. if you don't find a light out, next check your turn sig relay, not hard to find, there are two under the dash, one for the turn sig, and one for the emergency flashers. they are inter changeable. change them out( one for the other) do the test again, fixed? if so just replace one, easily bought at the parts store. good luck Dave

Having a turn signal problem on Honda Accord 2003?

it would seem that you have a problem with the ground or the connector for the left side directional. it could be the front or the rear. the first thing to do is to check the sockets that the bulbs plug into for corrosion or for loose terminals. More often than not the problems like this are loose connections. turn the directionals on and wiggle the wires on the front and rear bulb sockets to see if they start working.

you can check the grounds as well. the grounds are where the black wires from the sockets are bolted to the frame of the car. The ground for the left rear lights is inside the trunk on the left side under the panel that runs parallel to the rear bumper. It is a cap screw that holds several wires to the body. The left front should be grounded inside the left front fender; usually behind the battery or air filter housing depending on the layout of the engine compartment.

the only other thing in common is the combination/turn signal switch on the column and that is a real possibility if the grounds and the connections are okay. that is not something you can do by yourself as it involves removing the airbag and the upper steering column. I'm afraid that's what you're going to find is the problem if the other things check okay.

it is not a fuse problem; it is not a bulb problem; it is not a flasher problem.

hope that helps

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