At the risk of sounding like some sort of commercial, most of these kinds of laws are for driving safety. If you're on a 2 lane road with your front running lights red, someone coming from the opposite direction might think they're taillights and end up partially or completely in your lane before they realize how fast you're closing and they've strayed from their own lane. This is especially so if they have poor vision or dirty windows. Or they're texting or emailing. Or the lane markings are covered in snow. Or worse.
How about if you made your front lights green? How's the colorblind guy coming from the other direction know they're not red, then? All he knows is they're not white. 8 percent of human males are color blind. So out of 100 cars passing you in the opposite direction, maybe 50 (50%) are male, and maybe 4 of them are color blind. 1 in 25 chance that you'll cross paths with someone that can't tell red from green.
We have the same laws in the states, and I appreciate them. We already have way too many driving fatalities on the road. Nearly 20,000 people died in traffic accidents in the US in the first 6 months of 2015. In the same 6 months there were 2,300,000 serious injuries from traffic accidents. Hate to think of how many it would be if there were fewer safety laws.
We have way too many intentionally bad drivers: distracted drivers, drunk drivers, guys that think they're race drivers, you name it. Yeah, I think it's intentional if they're doing something they know is against the law or is potentially dangerous to others and do it anyway. They want to kill themselves, they should find some other way of doing it without jeopardizing others. And then there are also just plain bad drivers and drivers with poor vision, poor reflexes, and legitimate accidents that were really no one's fault (deer in the road, etc.).
