Topeka ? A study commission is drafting a proposal to require first-time drunken drivers in Kansas to put ignition interlock devices on their vehicles.

The commission’s decision Monday to move ahead is a step toward recommending that legislators strengthen laws against drunken driving next year.

Kansas law now requires ignition interlock devices upon a second drunken-driving conviction. Mothers Against Drunk Driving is pushing for a change.

The plan under consideration would require first-time offenders to use ignition interlocks for at least a year after having their licenses suspended for at least 30 days. Penalties would depend on how much alcohol is in a person’s system.

The commission expects to review a draft proposal in September or October.