Abstract: Method, system, and computer program product for providing turn-by-turn directions to mobility impaired individuals. Movement of users associated with certain mobility classes are tracked to determine when the users deviate from certain geographical features, such as sections of sidewalk. In the event of a deviation, a reliability score for that geographical feature is decreased. When another user of the same mobility class requests directions and a candidate path uses the same geographical feature, the decreased reliability score is applied to that candidate path to provide the other user with an indication that the path may be difficult to traverse. The user may select a different candidate path with a higher reliability score.

Abstract: Method, system, and computer program product for providing turn-by-turn directions to mobility impaired individuals. Movement of users associated with certain mobility classes are tracked to determine when the users deviate from certain geographical features, such as sections of sidewalk. In the event of a deviation, a reliability score for that geographical feature is decreased. When another user of the same mobility class requests directions and a candidate path uses the same geographical feature, the decreased reliability score is applied to that candidate path to provide the other user with an indication that the path may be difficult to traverse. The user may select a different candidate path with a higher reliability score.

Abstract: A distributed data processing system comprising a plurality of communicating computers including at least one message originator computer and at least one message destination computer, the message originator computer originating messages to be delivered to the message destination computer, at least one manager computer responsible of managing communications between the computers, wherein the manager computer is adapted to receive the messages originated by the originator computer and to dispatch the messages to the message destination computer, and at least one backup computer adapted to take over the role of the manager computer in case of failure thereof, wherein the backup computer is adapted to receive the messages originated by the originator computer and, in case of failure of the manager computer, to dispatch the messages to the message destination computer.