A hearing is scheduled for March 3 on a bill in California that would require anyone who uses a cell phone while driving to have a hands-free device. AB45, which was introduced by California Assemblyman Joe Simitian, would set the fines for not having one of the devices at $20 for the first offense and $50 for every subsequent offense. Like many other cell phone proposals across the country, it makes an exception for people using the phones to make an emergency call.