Here in Merced County, CA, we require a 36" man door out of a garage - either directly to the exterior or a 36"-wide path of travel through the house to the exterior.

This is a code interpretation of CBC 1003.3 by our Building Official, and many other jurisdictions around us either don't see it that way or just ignore it. Personally, I think it's a great idea and I have no problem enforcing it.