Will state-by-state regulation of self-driving vehicles work -- and keep people safe?

Pennsylvania is the latest state to consider allowing autonomous cars.

A future where motorists share streets and highways with driverless cars may still be years away, but transportation experts are saying now's the time for elected leaders to plan for that scenario.

Pennsylvania is the latest state to test drive the idea.

The state's Senate Transportation Committee approved a non-partisan bill on Jan. 26 that would expand regulatory rules concerning the operation and testing of highly automated vehicles, aka HAVs, and allow them to operate without anyone inside.

Legislators could vote on the bill later this year -- if approved, it would go into effect 90 days.