Even in the U.S. I find online electronic maps are not always intuitive.
Obviously if you see an Interstate shield on a map you know what you're getting into, but in some cases there are U.S. highways (one level down from Interstates) or even state routes that are multi-lane divided controlled access, and as fast as Interstates. But the way they're shown on maps you often don't know what they are and they could be two-lane rural highways with lots of stoplights and lots of passing lanes, for all you know.
Another thing is that it's not always practical to zoom into the entire route you're gonna follow. If you zoom in on the A-50 in eastern Gatineau it appears as four lane divided controlled access. If you zoom in a bit further around the Montebello area it's the same but you miss the fact there are fairly long sections on your route that are undivided super-2.
So colour coding and even a different design depending on the nature of the route would be great. Just like in the good old days.
Maybe not as complicated as this, but it gives a good idea:
http://www.cartotalk.com/uploads/mon...1247967045.png