Because a lit lamp use energy. Switch it off and you save energy.
If your question is "What would I conserve by turning off lights and fans?", the answer is electricity.
According to Enertia Engineering Ltd., a Enertia Solar Street Light costs 75$, while a traditional solar street light costs 170$. Compared to these solar lights, a regular street light costs 550$.
Neon lights up when electricity passes through it, producing a reddish-orange glow.
There are many different advantages surrounding the use of solar post lights. The most noted benefit would be that one would have a lower electricity bill as the lights are 'fed' by the sun.
The most important thing is lights. If you turn off your computer, television and anything else that uses electricity would be great!
It wold be really hard because there would be no lights, no TVs no no computers. It would be so hard.
Yes.
They use so little extra fuel as you would not be able to measure it. But technically the answer is yes. The lights burn electricity, the car burns gas to make electricity. But the extra is tiny tiny amounts.
Street lights are very important. They automatically turn on when it gets dark outside, providing a small amount of light for people who go out at night. They help drivers see things out of range of their car's headlights and give pedestrians light to see by.
There are many kinds of street lights some consume as much as 750 W others (newer LED varieties) as little as 30W or as much as 180 W. In 10 hours you would multiply these figures by 10.
The bike would need to have the street legal requirements like turn signals, horn, head lights, tail/brake lights, mirrors plus you'll need a insurance on the bike and a license plate.
Well despite the obvious paradox of them needing the sun to work, they would be extremely expensive, both to buy and maintain, and would be unreliable. Both qualities you really don't want in a street lamp.