NextBus  is a vendor that provides real-time information service for many transit agencies in the United States. While another data source such as an AVL system must provide real-time data information, NextBus uses GTFS data to import basic information about the transit agency’s routes, stops, and schedules.
- NextBus, Inc. "Nextbus." Accessed August 1, 2012 from http://www.nextbus.com/