DWI Defense in New Jersey: Penalties, Defenses, and What to Expect

New Jersey DWI Law

Driving While Intoxicated (DWI) in New Jersey is governed by N.J.S.A. 39:4-50. Unlike most states, DWI in New Jersey is a traffic offense — not a criminal offense — which means there is no jury trial. However, the penalties are severe and can have lasting consequences on your driving privileges, employment, and insurance rates.

DWI Penalties in New Jersey

First Offense (BAC 0.08% - 0.09%)

• Fine: $250-$400
• License suspension: 3 months
• Up to 30 days in jail (rarely imposed)
• Ignition Interlock Device (IID) for 3 months after license restoration
• IDRC (Intoxicated Driver Resource Center) attendance
• Insurance surcharge: $1,000/year for 3 years

First Offense (BAC 0.10% or higher, or refusal)

• Fine: $300-$500
• License suspension: 7-12 months
• Up to 30 days in jail
• IID required during suspension and for 9-15 months after restoration
• Insurance surcharge: $1,000/year for 3 years

Second Offense

• Fine: $500-$1,000
• License suspension: 2 years
• 48 hours to 90 days in jail (mandatory 48 hours at IDRC)
• IID for 2-4 years
• Community service: 30 days
• Insurance surcharge: $1,000/year for 3 years

Third Offense

• Fine: $1,000
• License suspension: 10 years
• 180 days in jail (90 days can be served in inpatient rehab)
• IID for 10 years
• Insurance surcharge: $1,500/year for 3 years

Common DWI Defenses

Challenging the Stop

The police must have reasonable articulable suspicion to stop your vehicle. If the stop was unlawful, all evidence obtained after the stop — including field sobriety tests and breath test results — may be suppressed.

Challenging Field Sobriety Tests

Field sobriety tests (walk-and-turn, one-leg-stand, horizontal gaze nystagmus) are subjective and can be affected by:

• Medical conditions (inner ear disorders, knee or back problems)
• Fatigue or nervousness
• Improper administration by the officer
• Poor lighting or uneven surface

Challenging the Alcotest (Breathalyzer)

New Jersey uses the Draeger Alcotest 7110 MKIII-C. Challenges include:

• Failure to observe the 20-minute deprivation period before testing
• Improper calibration or maintenance records
• Operator certification issues
• Mouth alcohol contamination
• Medical conditions affecting breath test results (GERD, diabetes)

Rising Blood Alcohol Defense

Alcohol continues to be absorbed into the bloodstream for 30-90 minutes after drinking. Your BAC at the time of driving may have been lower than at the time of testing.

The Alcotest Refusal

New Jersey's implied consent law requires drivers to submit to breath testing. Refusing the Alcotest results in a separate refusal charge with its own penalties:

• First refusal: 7-12 month license suspension, $300-$500 fine, IID requirement
• Second refusal: 2-year suspension
• Third refusal: 10-year suspension

Importantly, refusal does not prevent a DWI conviction — the prosecution can use the refusal as evidence of consciousness of guilt.

Municipal Court Process

DWI cases are heard in Municipal Court. The process includes:

1. Initial appearance and arraignment
2. Discovery requests (police reports, Alcotest records, dashcam footage)
3. Pre-trial motions (suppression hearings)
4. Trial before a municipal court judge
5. Sentencing

Appeals go to the Law Division of the Superior Court, where a de novo (new) trial is conducted.

This article is for general informational purposes only and does not constitute legal advice.