Route planning software is a computer software programme designed to plan a (optimal) route between two geographical locations using a journey planner specialized for road networks for the purposes of providing automotive navigation. It can typically provide a list of places one will pass by, with crossroads and directions that must be followed, road numbers, distances, etc. It also usually provides an interactive map with a suggested route marked on it. Many online mapping websites offer road route planning as an additional feature of their mapping functions. Applications can sometimes also calculate the journey time and cost, and some also display points of interest along the route.