Governor Arnold Schwarzenegger on Sunday signed into law two bills authored by Southland lawmakers that crack down on drunken drivers.

Both laws involve the installation of ignition interlock devices on cars by DUI offenders. The ignition interlock device, an instrument that is installed on a vehicle's dashboard tests a person's blood alcohol count before the vehicle can be started.

AB 91, authored by Assemblyman Mike Feur (D-Los Angeles) and former city councilman, which creates an ignition interlock device pilot program in four counties for every vehicle owned or operated by a first-time DUI offender.

The other new law, SB 598, authored by State Sen. Bob Huff (R-Diamond Bar) will allow repeat DUI offenders to apply for a restricted driver's license if they install an ignition interlock device on their vehicles.

"I took action and signed these bills because we must do everything we can to ensure the public's safety on the road," said Schwarzenegger. "By installing ignition interlock devices we are making it harder for DUI offenders to get behind the wheel while intoxicated and we are working to save innocent lives."