(1) The court may order that after a period of suspension, revocation, or denial of driving privileges, and for up to as long as the court has jurisdiction, any person convicted of any offense involving the use, consumption, or possession of alcohol while operating a motor vehicle may drive only a motor vehicle equipped with a functioning ignition interlock. The court shall establish a specific calibration setting at which the interlock will prevent the vehicle from being started. The court shall also establish the period of time for which interlock use will be required.

     (2) The department shall require that, after any applicable period of suspension, revocation, or denial of driving privileges, a person may drive only a motor vehicle equipped with a functioning ignition interlock device if the person is convicted of an alcohol-related violation of RCW 46.61.502 or 46.61.504 or an equivalent local ordinance.

     The department may waive the requirement for the use of such a device if it concludes that such devices are not reasonably available in the local area. The device is not necessary on vehicles owned by a person's employer and driven as a requirement of employment during working hours.

     The ignition interlock device shall be calibrated to prevent the motor vehicle from being started when the breath sample provided has an alcohol concentration of 0.025 or more. The period of time of the restriction will be as follows:

     (a) For a person who has not previously been restricted under this section, a period of one year;

     (b) For a person who has previously been restricted under (a) of this subsection, a period of five years;

     (c) For a person who has previously been restricted under (b) of this subsection, a period of ten years.