California state Sen. Jerry Hill (D-San Mateo) is proposing legislation that would require all Californians convicted of a DUI offense to install vehicle ignition locks that detect blood-alcohol levels.
The bill would expand a program already in use in four California counties, including Alameda County.
Under the plan, drivers would have to use the devices for six months on a first offense and for a year on a second conviction.
Hill said repeat offenders make up one-third of all DUI cases.
Hill said he will unveil more details Monday in Redwood City.
