Extra light bulb in the head light assembly

[ellenbetty]

Day time running lights are required in Canada to make vehicles more visable coming out of tunnels and shaded areas. Some states require head lights on when using rain wipers.

Both of my Yarises have those DTR lights which use the main head light bulbs (low beam?). As some truckers have on the back of their trailers, LIGHTS ON FOR SAFETY. I am wondering if these running lights are bright enough to use if the low beam filiment burns out. But it sounds like the running lights are not powerful enough to be legal to use as low beams.