Most dedicated car GPS have radio receivers to get the congestion alerts put out locally. https://en.wikipedia.org/wiki/Traffic_announcement_%28radio_data_syste

Most dedicated car GPS have radio receivers to get the congestion alerts put out locally. https://en.wikipedia.org/wiki/Traffic_announcement_%28radio_data_systems%29 https://en.wikipedia.org/wiki/Traffic_announcement_%28radio_... It's not quite the same orwellian level of detail but it helps with the big ones.