You can only use navigation systems specifically designed to accept traffic data from a subscribed NavTraffic receiver. You can visit the SiriusXM infotainment page to see a list of NavTraffic-enabled vehicles.
If your vehicle came equipped with a navigation system, check your owner’s manual or contact your dealership to see if your system can receive NavTraffic data. If you’re interested in purchasing a compatible system, most local electronics distributors sell and install separate systems that can receive NavTraffic data.