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None of that requires cellular connectivity. It can and was accomplished using only wifi sync at home. Live traffic information is (was?) broadcast on AM radi
by mulmen 2y ago
None of that requires cellular connectivity. It can and was accomplished using only wifi sync at home. Live traffic information is (was?) broadcast on AM radio.
- jazzyjackson 2y agowas it ever AM? info I can find points to traffic info being encoded in FM broadcast, as "audio" but above audible frequencies, 57khz, same as any metadata you get with modern digital radio - station name, song name, artist name etc. https://www.mediarealm.com.au/articles/fm-rds-radio-data-system-guide/ https://www.mediarealm.com.au/articles/fm-rds-radio-data-sys...
- mulmen 2y agoOh! Maybe it was FM. I always thought it was on the same band as the "Tune AM <whatever> for traffic information signs" but as you say outside the audible frequencies. Regardless the point is that the relevant information can be broadcast publicly and does not require location or cellular connectivity to function. My 2010 BMW knew about traffic jams but had no cellular connectivity to my knowledge.
- jen20 2y agoYour 2010 BMW very likely did have cellular connectivity given that my 2008 model did. It might not work today though.
- mulmen 2y agoIt had the ability to call emergency services. But I don’t think it got map or traffic data through the cellular radio. If it was getting data through the cellular radio it wasn’t very much data.