Modifies alcohol violation provisions relating to: (1) Day-for-day credit for the time period in which a person kept an ignition interlock device installed;

(2) Requirement to install ignition interlock device for reckless driving, negligent driving, or participation in a deferred prosecution program;

(3) Alcohol monitoring same time period as mandatory license suspension or revocation;

(4) Limitations on eligibility for the deferred prosecution program;

(5) Prior offenses with regard to vehicular homicide and vehicular assault; and

(6) Enhancements to the standard sentence range for vehicular homicide.