Well there are a couple of ways to force your own route and they are pretty easy to do.
First thing I'll do if it's not routing like I want it to is to add an intermediate via point. Just by adding an intersection of two roads you know you want to cross along your route it should then force the route how you want it. Sometimes you may need to add one or two more.
If that just doesn't do it, I'll use the manual routing tool and actually draw the route on the map by hand. That can be a pain though if you are covering a lot of miles.
Also, check your routing preferences under settings. There you can wiegh how the routing will factor different types of roads while making your route. For example, you could set hiways down to zero and it will do whatever it can to keep you off the superslab.
07 TT-R125LE (son's)
07 Shadow VLX (sold)
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