Effective January 1, 2011 a 4-month certification is required from the ignition interlock device installer/vendor showing compliance with RCW 46.20.720 for the interlock to be removed.
The interlock restriction will remain in effect until the DOL receives a declaration from the person's ignition interlock installer/vendor certifying that there have been none of the following incidents in the four consecutive months prior to the date scheduled for removing the interlock:
(a) An attempt to start the vehicle with a breath alcohol concentration of 0.04 or more;
(b) Failure to take or pass any required retest; or
(c) Failure of the person to appear at the ignition interlock device vendor when required for maintenance, repair, calibration, monitoring, inspection, or replacement of the device.