XM NavTraffic is a service from XM Satellite Radio that provices traffic data for several major US cities. Data for this service comes from NAVTEQ Traffic.
Some GPS navigation systems can use XM NavTraffic data to help avoid road segments with traffic problems. To display the XM NavTraffic service, a navigation system requires a map database from NAVTEQ or TeleAtlas/GDT.
XM NavTraffic competes with TMC service from Clear Channel.