Any portable GPS units for commercial use?

Question

I have a few garmin GPS units . I need to get some for delivery drivers . These drivers can not take many roads becase we are commerical use . Garmin does not have commercial routes does any one know what brand or model of GPS unist do commercail roads ?

Answer 1

I thought there was a setting in the routing options on the receiver for "Truck."  There are several routing settings, like car, emergency vehicle, pedestrian, motorcycle, and so on.