How accurate is XM NavTraffic data?
Sirius Traffic delivers the best information available from departments of transportation, police and emergency services, traffic sensors and cameras, airborne reports and other sources to your navigation system. Accurate incident information is dependent on locating, verifying and reporting the incident as soon as the incident occurs. Incident information is especially dependent on various departments of transportation reporting accurate and timely data. Proper maintenance of traffic sensors and a large number of GPS equipped trucks or probe data points are essential in creating accurate flow information. Many of the traffic sensors and probes have inherent reporting delays up to 20 minutes. We are constantly improving the accuracy of our flow data.
