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New Jersey DUI Laws

DUI Defense in New Jersey

Statutes, Penalties, and Defense Strategies

What you are facing, the deadlines that bind you, and the questions an attorney needs to answer — under New Jersey (NJ) DUI law.

BAC Limit

0.08

Enhanced BAC

0.10 (tiered: 0.08–0.099 / 0.10–0.149 / 0.15+)

Higher penalties above this

Lookback Period

10 years

Prior offenses count within

First Offense Penalties in New Jersey

Jail TimeUp to 30 days
Fines$250 – $500 (varies by BAC tier)
License SuspensionIID installation until BAC-specific period expires
Ignition Interlock

Plain language

A breath-tester wired into the car ignition. The car will not start without a clean sample.

Required for all first-offense DUI convictions

Implied Consent and Test Refusal

New Jersey has an

implied consent law

Plain language

By driving on the state's roads, you have already agreed to a chemical test if an officer has probable cause to think you are impaired.

like every state. The test can be breath, blood, or urine. Refusing carries its own penalty, listed below.

Refusal Penalty

7-month license suspension + mandatory IID

New Jersey-Specific Detail

New Jersey replaced license suspension with mandatory IID installation for first-offense DUI (effective Dec 2019). The state uses a three-tier BAC system with escalating penalties at 0.08, 0.10, and 0.15.

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DUI Defense Playbook — $127

26 questions that change how your next attorney meeting goes, a case stage roadmap, red flag checklist, and a case progress scorecard. Instant PDF download — calibrated for New Jersey DUI defendants.

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Other New Jersey defense topics

Facing a different charge in New Jersey? Penalty ranges, enhancements, and defense questions for related crimes:

Drug Possession in New JerseyAssault in New JerseyDomestic Violence in New Jersey

Important: This page provides general legal information about New Jersey DUI laws as of the date of publication. Laws change frequently. This is not legal advice. For guidance specific to your case, speaking with a New Jersey-licensed attorney is one option, or take the free Masked Researcher’s First Read to see where your case stands.