GPS

Truck GPS devices do not limit you to only truck routes. Truck routes do not mean that you can't use other routes, at least in the US. Truck routes are informational and indicate that a truck would find the route more suitable. Trucks are only restricted by specific truck restricted road designations (as well as weight and height restrictions). A GPS may favor truck routes but, if it has a robust traffic source or historical traffic data, it's likely because it's actually the quicker way to go.