From auto standby thread to headlights, this thread. Amusing.
I guess that none of you have lived in Sweden or been to Sweden, or Scandinavian countries. Since we had a law on driving with dimmed headlights (or you guys call it half-light?)all day, all nights on the twilight, dawn accidents diminished by 2/3 all across the country. Now EU - for some strange reason - allows the tails lights to be operated manually beats me.
If you've been to Sweden, the dusk and dawn is a
VERY drawn out affair. It doesn't get dark so street lights are automatically turned on after 20 minutes like in meditereanean countries or like around the equator, when it turns dark within 10 minutes all year around.
Here we're talking
2-3 hours, and the human eye gets accustomed to "dark seeing" by that time, and can't decide on when to turn on or off lights appropriately. You go "Oh I see clear as daylight..." afte you hit something. So a lot of fines where handed out and went to court to determine who had the preferential right of interpretation of when the lights should have been turned on or not. Too late when you hit a bicyclist. So, they decided - ALL DAY - so there should be no bickering, whining, debate on where and when ti use them. And they don't draw that much current, the engines are fireing up and charging the batteries for this. And frankly, in broad daylight, you still see cars, from behind and front way sooner, than if the headlights was turned off.
Now, since EU directives ALLOWS for tail lights to be turned off, and just use brake light, a number of accidents has increased when cars hits at the rear. Just becuase they don't have managed to manually turn them on. Beats me that directive. You don't save anything with that, not petrol (gas) or anything else.
Now digressing, or hijacking the thread aren't we ?
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Effect of ambient light
"
The daytime running light was first mandated, and safety benefits first perceived, in Scandinavian countries where it is persistently dark during the winter season. As ambient light levels increase, the potential safety benefit decreases while the DRL intensity required for a safety improvement increases. The safety benefit produced by DRLs in relatively dark Nordic countries is roughly triple the benefit observed in relatively bright United States."
https://en.wikipedia.org/wiki/Daytime_running_lamp
So there. Period.