Why highways don't have lights?
Why don't highways have lights?
Why don't cars have pop-up headlights anymore? Why don't boats have headlights? Why do some drivers turn on their headlights in daytime? Why do railway traffic lights have green at the top and red at the bottom but road signals are the other way? Why do traffic lights start at red then green then yellow? Why should we turn off the lights inside the car while driving? Why can't we come up with street lamps that emit light to a very long range in all directions than putting up one after every 10 metre? Why do 18-wheelers sometimes flash their headlights when you pass them? LED driving lights in wet weather. Does it have a safer vision on wet roads? When neutral and ground wires get interchanged, there is flickering in the tube lights. Why? Are there countries where the traffic lights switch immediately from green to red without passing by yellow? Why do lights go off when it rains? Does the government shut down the power supply? Do compact fluorescent lights have any advantages over LED lights? Why are there no power outlets in buses? Why can't the phosphors of fluorescent lamps be used for electroluminescent lights? Is it legal to run a red light at intersections in order to yield the road to emergency vehicles? If security cameras infra-red searchlights are below the range of human eyesight, then why do some cameras LED lights glow a dull red-ish colour at night? Why don't cars usually have auto-dimming side mirrors? What are some reasons people don't use turn signals when driving? Are driverless cars capable of responding to hand (including flashlight) signals from policemen directing traffic? How do incandescent and fluorescent lights work? Why can't anyone see electricity? Why are blue and red neon lights illegal or restricted for commercial uses in Mexico? Why are all traffic light colors, one color? How come boats and ships don't have headlights? Why does fire emit light? Does turning the lights off actually save on your electric bill? Why does fire emits light? Why are blue and red neon lights illegal or restricted for commercial uses in Canada? How do LED fluorescent lights work?