The exact laws may differ from place to place, but usually a bicycle only require lights and reflectors if it's being used on roads/in public after dark.
Yes that's why they have reflectors on them.
Generally no, but the bicycle has to be properly equipped for it. This usually means a white light and a white reflector facing front, a red light and red reflector facing rear, and orange reflectors facing sideways.
If the bicycle is road legal(has brakes, lights, reflectors) - sure.
Depends on the type of bike. On most bikes things like locks, fenders, racks and chainguards/chaincases are optional. Lights and reflectors can also be optional.
Depends on the type of bike. On most bikes things like locks, fenders, racks and chainguards/chaincases are optional. Lights and reflectors can also be optional.
To avoid having bike crashes, look for traffic. Try to see situations before they happen. Wear bold colors and reflectors.
How far a reflector can be seen depends on the power of the light shining at it. So there's no set answer.
A reflector is like a clever mirror, it doesn't shine by its own but will cause any light that hits it to bounce back in the direction that it came from. A headlight is a light, if you have it on it will shine by itself. Reflectors are great for being seen by people who are shining a light in your direction while lights can be seen by anyone looking.
They mark the edge of the safe area, keep clear of them. In the UK red reflectors are always shown to the rear of a vehicle, never to the front, therefore they mean you are approaching the rear of car, lorry, bike etc.
if the bike has one seat, it is illegal because of safety issues, but if it has two seats, it is perfectly fine.
No. More people run on the bike path by my house then ride their bike on it.
No, it is illegal to ride a dirt bike on the street but you can ride it on a trail or dirt bike track.