Gov. Jack Markell is signing legislation that requires all people convicted of drunken driving in Delaware to have ignition interlock devices installed on vehicles they drive.
The bill to be signed Wednesday cleared the General Assembly in June on the final day of this year's legislative session.
Previously, interlock devices were required only for first offenders arrested with a blood-alcohol concentration of .15 or higher or who refused to take a chemical test, and for repeat drunken drivers.
The new law, similar to those in more than a dozen other states, requires use of an interlock device for at least four months for a first offense.