Slider images: 1  Attribution: RoyalTen73; License: public domain. 2  Attribution: Unknown; License: public domain. 3  Attribution: The Missionary Repository for Youth, and Sunday School Missionary Magazine; License: public domain. 4  Attribution: not given; License: public domain.
if you are driving with your high beam lights on you must dim them at least 500 ft from any oncoming vehicle so you don t blind the oncoming driver you must use low beam lights if you are within 200 300 ft of the vehicle you are following consult your state s drivers handbook for details if an approaching car is using its high beams don t look directly into the oncoming headlights look toward the right edge of your lane
The Earth's surface curves out of sight at a distance of 3.1 miles, or 5 kilometers. But our visual acuity extends far beyond the horizon. If Earth were flat, or if you were standing atop a mountain surveying a larger-than-usual patch of the planet, you could perceive bright lights hundreds of miles distant. On a dark night, you could even see a candle flame flickering up to 30 mi. (48 km) away.