As debate continues about driverless cars on San Francisco streets, California lawmakers are talking with the auto industry about driverless trucks now, too.

A new bill is advancing in the state legislature that would put limits on testing out driverless 18-wheelers, and would require a human to be inside the truck until at least 2031. 

For more, KCBS Radio news anchors Eric Thomas and Margie Shafer spoke with KCBS insider Phil Matier.