NASHVILLE (AP) — Tennessee's ignition interlock law will apply to more drunken drivers under legislation signed by Gov. Bill Haslam.

Currently, ignition-locking devices, which force drivers to pass breath tests to start vehicles and keep them running, are required for DUI offenders whose blood alcohol level topped 0.15 percent.

This bill drops the level to the intoxication threshold of 0.08 percent and would require first-time offenders to get the devices. In turn, those convicted of DUI won't get a restricted driver's license and will be allowed to drive anywhere.

The measure was unanimously approved 95-0 in the House and 31-0 in the Senate.

It was sponsored by Republican Sen. Mae Beavers of Mt. Juliet and Republican Rep. Tony Shipley of Kingsport.