The bill follows the deaths of five women. They were killed when a limo burst into flames on the San Mateo Bridge in May.
St. Sen. Jerry Hil, D-San Mateo has sponsored the bill. It calls for all limousines to carry two fire extinguishers.
The bill would also require the highway patrol to inspect limos each year and for vehicles to meet federal and state safety standards.
Investigators blamed mechanical failure for the deadly fire.