DRL's have been required by law in Canada for quite a few years.
I know there's a bit of a debate going on as to their usefulness, but I personally find they are very useful. Other vehicles are more visible during the day with the DRL's on.
Here's some links:
http://www.usroads.com/journal...3.htmh ... tudies.htm
This one is an argument against DRL's stating the low light conditions in Canada the reason why they are law here. The author of the article is an idiot, since 85% of Canada's population lives within 200 miles of the Canada/US border - so much for the low-light conditions theory.http://www.thecarconnection.co....html
They do mention that GM has been putting DRL's on US vehicles for a few years now, and Volvo, VW and Toyota are now doing the same.