Caltrans is studying whether buses could one day travel up to 140 mph on dedicated freeway lanes, a concept that could dramatically cut long-distance travel times across California.
Transportation officials say the idea envisions connecting major cities including Sacramento, the Bay Area, Los Angeles and San Diego through exclusive lanes, new transit hubs and express bus service.
One early proposal outlined in a recent Caltrans webinar estimates a trip from San Francisco to Los Angeles could take about three hours and 12 minutes at speeds around 120 mph…