SACRAMENTO -- Over the objections of the state limousine association, Gov. Jerry Brown signed into law Friday a bill that requires limos like the one involved in the deadly San Mateo Bridge fire to have two extra emergency exits.

But the governor also vetoed a related bill that would have expanded statewide safety inspections to all limousines. In his veto message Brown said the legislation wouldn't have charged carriers enough to cover the cost of the program.

Both bills came in response to the May 4 fire in a Lincoln Town Car stretch limousine that killed five women as they were riding to a bridal party in Foster City.

Brown's signature on Senate Majority Leader Ellen Corbett's SB 109 translates into two additional exits, such as push-out windows and escape hatches, for the up to 4,200 limos on the state's roads.

"This is a very important change in the law because people can now feel they are safe when riding in limos," said Corbett, D-San Leandro. "This bill will ensure that such a tragedy doesn't happen again."

Her law takes effect in July 2015 for newly built limos and rolls out for existing ones in January 2016. It also requires safety briefings for passengers, similar to those before a commercial airline flight.

The four women who escaped the smoke-filled car crawled through a small partition window between the passenger and driver's compartments. Corbett has said additional exits would have allowed more women to get out and survive the flames in the burning limo.

The California Highway Patrol ruled the fire was sparked when the car's drive shaft and metal frame began rubbing together. The friction created enough heat to ignite the carpeting in the limo, which spread to the car's seats and sent toxic smoke billowing into the vehicle.

In September the Greater California Livery Association wrote a letter to Brown urging him to veto the bill, saying the exits could spur a "massive explosion," by feeding oxygen to a fire. The group also said the timeline to install the new safety features was unrealistic.

Brown's veto of state Sen. Jerry Hill's SB 338 means the state inspection of larger charter party vehicles will not be expanded to smaller limousines like the one involved in the San Mateo Bridge fire. Currently the California Highway Patrol does annual safety checks of limos or buses that carry 10 or more people but not on vehicles below that threshold.

Hill's bill would have required charter carriers to pay an up to $75 fee for the inspections, but that wasn't enough to help cover the $900,000 cost of the program, Brown wrote in his veto. He urged the legislature to bring him a reworked bill in January, adding "riding in a limousine should be free from dangers that can be avoided with an annual safety inspection."

Hill said he plans to bring the bill back to the legislature and have it to the governor in 2014.

"We will correct the financial questions," said Hill, whose bill also required fire extinguishers in limos. "And we will get (Brown's) signature."

Contact Joshua Melvin at 650-348-4335. Follow him at Twitter.com/melvinreport.