Why do Volvo cars constantly have their lights on even during the daytime?

I've always found this to be a little weird and offputting especially if a Volvo is driving behind me!|||Volvo's aren't the only ones. Many cars are manufactured this way for safety reasons. Statistically, they're involved in less accidents.|||maybe they have those light sensitive ones,where it can tell if its dark or overcast the lights come on!volvo are the safest built cars in the world|||volvo started the trend to increase safety during the daytime|||there like that by GM safety|||drive lights a lot of cars have specific 'daytime' or drive lights but volvos use the same.. mine does too and i drive a chevy malibu.. it annoys me and im driving the thing!! haha|||Safety...it makes the vehicle more noticeable. It's not just Volvos either.|||they are called daytime running lights and it is for safety. thats why motorcycles have their lights on all the time|||in Sweden it is the law. All cars must keep their lights on at all times|||It is a Swedish thing they are very strict on road safety. I used to drive Saab's they had daylights too. I think daylights are a tremendous idea and I am very surprised that they have not been made compulsory in all countries.|||Not al volvo's have this though, on most volvo's there is a way to disable it (a small switch somewhere)