Back-up route maps on the map

Back-up route maps are pdf maps in the Finnish Transport Infrastructure Agency's AVA service that show a certain road section and a back-up route for it. A back-up route is a pre-planned possible route option for a situation where the main route cannot be used. There are no vehicle type-specific restrictions on the spare route. The geometry of the backup route map data comes from the Velho's "Reserve Routes" data. The geometry of the back-up routes and the pdf maps are combined using their common back-up route number.