What is the purpose of the flashing red LED light on the dashboard of cars?
The blinking light indicates that a car has an electronic security system.Incidentally, the reason this is added is to enhance the deterrent to theft effect of the security system — that is to say, the light is designed to further discourage attempted theft.Here are some other considerations as to why this component:Red LEDs are the oldest and cheapest kind of LED (the blue LED won the 2014 Nobel Prize [1].They have a lower forward voltage requirement than any most other visible light spectrum LEDs.By blinking intermittently its power consumption becomes so low as to be nominal (.06 watts one every 5 seconds for a one fifth a second would be more realistic, to get the nominal draw at that specification divide .06 by 25).The color red doesn’t affect light sensitivity of human eyes.[1] Professors Isamu Akasaki, Hiroshi Amano and Shuji Nakamura were awarded the 2014 Nobel Prize for physics for the invention of blue light emitting diodes (LEDs), which has enabled bright and energy-saving white light sources.
Am I at fault if I hit a car in front of me because he slammed on his brakes very suddenly?
My wife used to work in the car insurance department as a claims consultant. She was trained over the period of 1 month on how to validate a claim. She was the deciding person who puts the claim into the system, marks you down in the system as requiring investigation by the insurance company and whether or not you are at fault or the other part(ies) were.In your described situation, you are 100% to blame. You failed to keep a safe distance of at least 2 seconds from the car in-front of you. There is no point disputing this if you find yourself in the situation as described.The general rule is if you hit someone from behind, you are assumed by default to be at fault. However, there are exceptions to this rule.The car in front pulled an illegal manoeuvre and you have a witness to verify this is the case.The car infront reversed into you. Once again, you need a witness or this is hard to prove.The car in-front of you had no brake lights or any lights whatsoever, thus driving an unroadworthy vehicle.Someone hits you from behind and you were stationary, pushing you via the impact into the car in-front. If you were moving at the time and were hit, then you are partly to blame.The car in-front encounters an emergency situation like; engine dies, tire is punctured or loss of control of the vehicle and they do not use their hazard lights (if operable).The driver in-front was distracted via the use of a mobile phone or another handheld device and you can prove it (very difficult).There are some other niche situations where hitting someone from behind would not be your fault. However, in most situations the case is clean cut and who is to blame is immediately evident.Always keep a safe distance, follow the rules and just be a decent human being on the road.
Why do my hazard lights work, but not my turn signals?
Hazard lights and turn signals use the same bulb, so it is not the bulb, the lamp, or the cables to them. Turn signals only work when the ignition is on; hazard lights work whether the ignition is on or not. The two systems have separate power supplies, so they have separate fuses. You may have a blown fuse.Different vehicles use different circuits, and it is not possible to accurately diagnose the fault with the small amount of information provided. You need a circuit diagram and a voltmeter, and a continuity tester. First locate and test the turn signal fuse. Do you have voltage to and from the turn signal switch?The hazard light switch is not a simple on/off switch. In the “on” position, a fused battery feed connects to left and right turn signal. In the “off” position, the left turn switch wire is connected to the left turn lamp and the right turn switch wire is connected to the right turn lamp, so there are 3 inputs and 2 outputs.The fault could be a fuse, turn signal switch, hazard switch, flasher unit, or a broken wire or connection.