You can have multiple profiles that have distinct needs - for example height, width and/or weight. We have a 30' tow behind - if I use that profile, it'll keep me off tight twisty roads, not route through low bridges, or warn me if I venture onto roads that have weight restrictions. If you're a commercial driver, the database for services might be a bit irrelevant, as its focus is for RVs. Garmin might have a commercial version of this GPS, but it's probably more expensive.