License Suspension Duration Calculator
Estimate your driver's license suspension duration based on violation type, number of prior offenses, BAC level (if applicable), and whether a hardship/restricted license applies.
Formula
Total Suspension Days =
BaseDays × BAC_Multiplier + PriorOffenseAdd + MinorAdd + InjuryAdd + CDL_Add
- BaseDays: Statutory minimum suspension for the primary violation (e.g., 90 days for 1st DUI, 180 days for hit-and-run).
- BAC Multiplier: +50% if BAC ≥ 0.16% (aggravated DUI threshold).
- PriorOffenseAdd: +50% for 1 prior, +100% for 2 priors, +150% for 3+ priors (within 10 years).
- MinorAdd: +25% if a minor was involved or driver was under 21 (zero-tolerance law).
- InjuryAdd: +30 days (property damage), +50% (bodily injury), +100% (fatality).
- CDL_Add: +50% for commercial license holders per FMCSA federal standards.
- Hardship License: Does not reduce total suspension; mandatory minimum = 50% of total days before restricted privileges may begin.
Assumptions & References
- Base durations follow NHTSA Model Impaired Driving Law and AAMVA (American Association of Motor Vehicle Administrators) guidelines.
- DUI base suspensions: 90 days (1st), 1 year (2nd), 3 years (3rd) — consistent with majority-state statutes.
- BAC legal limit of 0.08% applies in all U.S. states; aggravated DUI threshold of 0.16% used per NHTSA recommendations.
- CDL holders are subject to stricter federal rules under 49 CFR Part 383 (FMCSA Commercial Driver's License Standards).
- Implied consent refusal suspension of 180 days reflects administrative (civil) suspension separate from criminal DUI proceedings.
- Point-based suspension threshold of 12 points follows the AAMVA Driver License Compact model.
- Hardship/restricted license eligibility typically requires SR-22 insurance and, for DUI, an Ignition Interlock Device (IID).
- Actual suspension length varies significantly by state. This calculator provides a general national estimate and is not legal advice.
- Prior offenses lookback period assumed to be 10 years (varies by state: some use 5 or 7 years).