150 meters
You must dim your high-beams if you're within 500 feet of an approaching car and dim your high-beams within 300 feet of the vehicle you follow.
500 feet
Lower headlight beams must be used when approaching within 500 feet of an oncoming vehicle or when following within 300 feet of the rear of another vehicle. This helps to prevent glare and ensures that visibility is maintained for both drivers. Using the appropriate headlight settings enhances safety on the road.
Yes, that would be common sense.
A quarter mile. If not correct answer - change the law. California law states - Your high beams have to be dimmed within 300 feet of following another driver and within 500 feet of an oncoming driver.
Both.
Because - as you overtake the vehicle in front, high-beams will be reflected straight back at the driver - through their mirrors. Low beams are angled more towards the ground.
Use low beams.
You should use your low beams to avoid blinding the driver ahead as you lights reflect in his mirrors.
500 feet.
Turn Signals, Low Beams, High Beams and Flashers