Delivered via FM, this service is provided by the Traffic Message Channel, hence you will sometimes see it referred to as FM-TMC. Expect lots of inaccurate reports as well as incidents that aren’t reported.
Live traffic – A nice feature that isn’t quite ready for prime time. Speaks street names – Formally known as text-to-speech, this function allows the device to call out the name of the street for upcoming turns, so you’ll get “in one-half mile, turn left on Oak Street,” rather than just “in one-half mile, turn left.” The only current nuvi without this is the 1100 series. The following, older nuvi models have been discontinued, though many are still available online. 
Here is our current chart to compare Garmin nuvi models. The following, older nuvi models have been discontinued, though many are still available online and are fully supported by Garmin.
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