US Patent 10168171 Apparatus and methods of determining paths through an electronic map

A plurality of routes through a navigable network represented by an electronic map are stored by a navigation device. Each route is defined as a plurality of point locations to be travelled between in a predefined order. The device receives a selection of one of the plurality of stored routes from a user, and determines a minimum cost path along segments of the electronic map between the plurality of point locations of the selected route. The minimum cost path traverses the plurality of point locations in an order based on the predefined order associated with the selected route. The device then outputs a set of navigation instructions to the user for guiding the user along the route.