NC S178

Removes the 45-day waiting period before limited driving privileges become effective for persons convicted of a first impaired driving offense with an alcohol concentration of 0.15 or above.

Maintains existing requirements that limited driving privileges for high-risk drivers (0.15+ alcohol concentration) include ignition interlock installation and restrict driving to employment, school, religious worship, court-ordered treatment, and interlock service facilities.

Applies the 45-day waiting period only to persons convicted of a prior impaired driving offense, not first-time offenders with high alcohol concentration.

Establishes that chemical analysis results presented at trial or sentencing are conclusive proof of alcohol concentration and cannot be modified by any party.

Becomes effective December 1, 2017, and applies to limited driving privileges issued on or after that date.