A system and method for providing traffic notifications to mobile devices is provided. The system obtains device data from a plurality of mobile devices within a similar area, gathered using, e.g., a GPS system. According to the speed that the mobile devices are travelling and the location of the similar area, traffic events can be identified and other mobile devices notified to provide dynamic updates as traffic situations change. Follow up notifications can be provided to update the user regarding the progress of traffic congestion, detours can be suggested, and various alerts provided. The mobile device may be connected to or part of a vehicle and leverage the notification system to provide different types of alerts and to notify users using various mechanisms.