Red light road sign
at a set of red lights. how many feet should you be behind the vehicle in front of you?
You should dim your headlights within 500 feet of the car in front of you. The rule of thumb is, if you can see another car, dim your lights.
500 feet
(3.5+5+3.5+5) = 17 feet around each window. 17 * 6 = 102 feet total.
You should dim your lights as soon as you see their lights.
Yes, if they are the same type of lights, having twice as many lumens gives you twice as much light, regardless of how many lights you need.
1,000 feet
there are only one type of LED lights. a bunch of LED lights is Three light.
100 feet
On an average car, there are high and low beam lights for night driving, clearance lights on the front and back, front and rear turn signals, and back-up lights used when backing up.
Up to 3,000 lights
Some of the lights are required. The rest are extras the driver/owner added.