TMC traffic data can help you avoid areas with traffic problems. Included: Garmin: StreetPilot c550, nuvi 660 Available as an option: Garmin: StreetPilot c340, c530, 2720, 2820, 7200, 7500, nuvi 350, nuvi 360, zumo 550 TomTom: GO 510, GO 910 (only in Europe) See Also GPS models with XM NavTraffic capability Do any GPS models work with both TMC and XM NavTraffic?
