Abstract: Method and arrangement for enabling vehicles of varying form and weight to use mass-produced planning map databases in a planning system. According to the invention, road elements are extracted from a route and it is determined if these road elements, either on their own or in combination with other road elements of the route or in direct connection with the route, could restrict the vehicle of varying form and weight of traveling along the route. If any of the road elements, alone or in combination, could cause a traveling restriction, the driver is alerted of this to allow him or her to take appropriate action.