Bill. I have found some are quite useful for height and weight. As they are based on the Truckers Maps. Now do I believe in everything, no. However when combined with the hardcopy, I find they are useful.
S&T, and the POI from Discovery Owners for height (excellent) was always very useful and reliable. Yes some will route you the long way around, however, using the hardcopy and web browser like "Mile by Mile". But as I stated, Until other online Maps (Google & Mapquest) incorporate a height routing. I take it all with a grain of salt.
