In EU there is a law that you should drive with headlight all time.

Old cars drive with low beam, new cars comes with daytime running lights (DRLs).

https://en.wikipedia.org/wiki/Daytime_running_lamp#European_...

EU has a regulation requiring new cars to be equipped with DRL capability, that's all. Laws requiring the use of lights in daytime that exist in some countries are completely unrelated to EU.

Actually this is interesting because manufacturers should make same car but equip it with different parts.

Other example is turn signals. On EU they're orange. And when you drive after US imported car here drivers are confused because their turn signals are red. So driver behind don't know does front driver going to stop?

DRL - is few bucks, but it's great improvement of road safety.

> DRL - is few bucks, but it's great improvement of road safety.

Only if you ignore all participants in traffic that don't burn through so much energy that a few watts extra aren't an issue. When drivers get everything they feel they need to see conveniently highlighted, attention will inevitably drop to compensate. They certainly know they need to see more than just cars, but the subconscious level only really cares for threats.

No, as you have cited, there is a law saying vehicles must be equipped with these lights, but it's up to national regulations on when they must be used.

See https://trip.studentnews.eu/s/4086/77033-Car-travel-in-Europ... for a list (incomplete, Denmark requires daytime lights.)

Nordic countries are different because even their "days" they sun can be seen 2-3-4 hours.

During winter at mid-day my lights automatically turned on... Just in simple overcast weather. So it does get bit gloomy at times.

unless it's summer in which case it can be seen about 19 hours.

But even on 19 hours day it's good with daylights.

It's easier to see what vehicle is running/driving or not.

The US has this law for motorcycles. Maybe we should apply it to driverless cars as well

Yes, every self-driving car should have a row of LED lights at the front. Also, they should indicate that the AI is actively scanning its environment by switching the LEDs on and off in a regular left-to-right pattern.

And those lights should be in a vertical row of 8 red lights, going left-to right.

And when the car speaks to the driver and the surroundings, there should be three vertical bar graphs made of red leds to indicate the speech.

There is a good controller for those kinds of lights, named "knight industry two thousand", but i think there is and upgrade to 'three tousand' available too.

And a guy with the flag running in front of the vehicle.

I feel the need to point out that whilst permanent headlights make vehicles more visible most of the time, in the most dangerous scenario, they actually make you less visible.

Low sun behind the vehicle, especially if it's a motorbike, makes it very hard to see. If the bike isn't lit up at the front you stand a fighting chance. If it's got the front headlight on then you don't even see the silhouette, you just see bright light surrounding and bright light from the middle.

Motorcycle Action Group in the UK has had to run a handful of "repeal this safety law because it actually makes things more dangerous" campaigns in the last 20 years.

That's an good idea.

Actually few LED lights didn't require too much power and maintenance.

If a law says you should do something, it’s not a law it’s a suggestion.