The RDS-TMC service is available in the following regions:
Note: You can only use RDS-TMC in the region where you purchased your device.
To receive the RDS-TMC signal, your device needs a built-in or an external accessory RDS-TMC receiver. A third-party external RDS-TMC receiver might not be compatible with your TomTom device. You can purchase a genuine TomTom RDS-TMC Traffic Receiver here: http://www.tomtom.com/en_au/drive/accessories/
Alternatively, you could consider a device with Lifetime TomTom Traffic.