House committee substitute makes the following changes to the first edition:

Amends GS 20-17.8(b), clarifying that the changes are effective for the subsection both before and after December 1, 2016. Requires, as a condition of restoration of a driver's license to a person convicted of driving while impaired, the installation of an approved ignition interlock system to prohibit the person from driving with an alcohol concentration of greater than 0.00 (was, 0.00 or greater) providing that the interlock ignition system was required because the convicted person had an alcohol concentration of 0.15.

Amends GS 20-19(c3), clarifying that the changes are effective for the subsection both before and after December 1, 2016. Requires, as a condition for the first restoration of a driver's license for a conviction under GS 20-138.1 for driving while impaired or a license revoked under GS 20-23 or GS 20-23.2, that the person not operate a vehicle if the person has an alcohol concentration greater than 0.00 (was, 0.00 or more) at any relevant time after the driving.

Effective July 1, 2016, applying to offenses committed on or after that date (was, effective December 1, 2015).