Drinking, Drugs and Health, and Driver Privileges and Penalties: Effects of Alcohol, BAC, Signs of a Drunk Driver, Drugs, Vision and Hearing, DUI Penalties, the Breath Test, Ignition Interlocks, the IDRC, Motor Vehicle Violations, Driver Programs, Surcharges, the Point System and Interstate Compacts

Written for aiforu2 as the source for a practice-test bank and the on-device tutor for the New Jersey driver license knowledge test. The facts follow the official manual; the wording is ours.

Source: New Jersey Driver Manual (2025), New Jersey Motor Vehicle Commission (MVC), chapter 6 "Drinking, Drugs, and Health" (pp. 114–119) and chapter 7 "Driver Privileges and Penalties" (pp. 122–141).

Alcohol

Alcohol makes drivers overconfident and muddled; even a small amount raises crash risk. After two to four drinks reaction time, coordination, balance, vision and distance judgment suffer. Only time sobers you: the liver burns off 90 percent of alcohol and the rest leaves through breath, urine and sweat, which is why quick fixes fail. Alcohol plus anger fuels much reckless driving, and most alcohol crashes involve a single vehicle yet kill passengers, pedestrians and others. One drink holds about a half ounce of alcohol whether it is 1.5 ounces of 86-proof liquor, a 12-ounce beer or 5 ounces of wine; it is the number of drinks that counts, and most people arrested for drunk driving had been drinking beer. BAC depends on the amount drunk, body weight, how fast you drink and food eaten; eating slows absorption but does not prevent a high BAC or sober you up. It is illegal to drive under the influence of liquor, narcotics, hallucinogens or habit-forming drugs or with a BAC of 0.08 percent or more, and for drivers under 21 with 0.01 percent or more. At just over 0.05 the crash risk doubles; at 0.10 it is six times; at 0.15, 25 times. Refusing a breath test is illegal and brings loss of the license, an IDRC referral, fines, an ignition interlock and a surcharge that suspends the license indefinitely until paid.

Police watch for speeding, weaving, driving too slowly, jerky speed changes and sudden stops at signs. Hosts should serve alcohol-free drinks and food, never push refills, stop serving early, keep drunk guests from driving (offer a bed or call police) and remember they can be sued. New Jersey was the first state to launch the Hero Campaign for designated drivers.

Drugs and health

Driving under the influence of any drug, or possessing a drug without a valid prescription, is illegal; drugs labeled "may cause drowsiness or dizziness," cold pills, tranquilizers and some prescriptions impair driving; never mix drugs or alcohol; show your prescription to police if asked. After alcohol, marijuana is the drug found most often in crash-involved drivers; it weakens lane tracking, distance judgment, vigilance and divided attention. Even a stiff neck or cough affects driving; let someone else drive when unwell. Have your eyes tested every year or two, and yearly after age 40; peripheral vision and distance judgment matter. Hearing warns of horns, sirens and screeching tires, so keep the radio down and never wear earphones.

The driving privilege

Driving is a privilege that can be suspended, with fines and jail for moving violations; a habitual offender has been suspended three times in three years. Privileges may be lost for unpaid parking tickets, driving while suspended, no proof of insurance, physical or mental disqualification, drugs or alcohol, traffic violations, fault in a fatal crash, or ignoring an MVC notice, and the MVC may order a re-examination of a problem driver.

DUI penalties

A person must be 21 to buy, possess or consume alcohol; an underage buyer or drinker in a licensed place can be fined $500 and lose the license (the suspension starts when first eligible if unlicensed).

First offense, BAC 0.08 to under 0.10: $250 to $400 fine, 12 to 48 hours at an Intoxicated Driver Resource Center ($264 or $321), up to 30 days in jail, a $1,000-a-year surcharge for three years, plus fees ($100 Drunk Driving Enforcement Fund, $100 AERF, $75 Safe Neighborhood, $125 DUI surcharge, court costs and small research-fund fees), and an ignition interlock for three months after restoration. First offense, 0.10 or more: $300 to $500 fine, the same IDRC, jail and surcharges, plus a $50 violent crimes assessment; interlock seven months to one year at 0.10 to 0.15. Since December 1, 2019 a first alcohol DUI below 0.15 costs the license only until an interlock is installed; at 0.15 or higher the license is lost three months with an interlock during suspension and 12 to 15 months after; a drug DUI costs 7 to 12 months with no interlock. Second offense within 10 years: two years, $500 to $1,000 fine, the $1,000 surcharge, 12 to 48 hours IDRC, 30 days community service, 48 hours to 90 days in jail, and an interlock during suspension and two to four years after. Third offense within 10 years of the second: eight years, $1,000 fine, $1,500 surcharge for three years, up to 90 days community service, 180 days in jail, interlock two to four years after. Underage first offense at 0.01 to under 0.08: 30 to 90 days suspension, 15 to 30 days community service and an IDRC or alcohol education program. Drinking alcohol while driving or riding: $200 first, $250 and 10 days community service after. Driving on a DUI suspension: one to two more years, $500, a $250-a-year surcharge and 10 to 90 days in jail. Driving with no insurance: one year, $300 to $1,000 and a $250-a-year surcharge (two years, up to $5,000, 14 days jail and 30 days service for a second). Driving while possessing drugs: two years and at least $50. A parent or guardian convicted of DUI with a minor aboard commits a disorderly persons offense with up to six months' suspension and five days' community service.

Breath test, interlock and IDRC

Under implied consent, using New Jersey roads means agreeing to a breath test after an intoxicated-driving arrest; refusers are taken to a hospital where blood may be drawn, pay a $1,000-a-year surcharge for three years, and after a first refusal lose the license until an interlock is installed (interlock 9 to 15 months after restoration). An ignition interlock is a built-in breathalyzer that blocks starting above 0.05 percent; periods run from three months to one year after a first offense by BAC, during suspension plus 12 to 15 months at 0.15 or higher, and during suspension plus two to four years for second and later offenses or refusals; a first commercial-vehicle offense at 0.04 to 0.08 requires an interlock in the non-commercial vehicle instead of suspending the basic license. Since February 19, 2024, installing an interlock voluntarily after arrest can reduce fines and suspension. Every DUI defendant is detained at an IDRC (one per county for first and third offenders, three regional centers for second offenders) for education and evaluation; those needing treatment are referred to at least a 16-week program, and completing the assigned program is a condition of re-licensing.

Motor vehicle violations

Unsafe driving: $50 to $150 first, $100 to $250 second, $200 to $500 third, with 4 points for a third offense within five years and a $250 surcharge. Reckless driving: up to 60 days in jail or $50 to $200, plus points. Abandoning a vehicle on a limited-access highway for four hours (or anywhere for 48 hours, or without plates): $100 to $500 and up to two years' suspension, then $500 to $1,000 and five years. Open containers of alcohol or unsealed cannabis in the passenger area: $200 first, then $250 or 10 days' service. Ice and snow flying off and causing harm: $200 to $1,000 ($500 to $1,500 commercial). Work zone and 65 mph zone violations: doubled fines. Failing to light the interior when an officer asks: $50. Insurance fraud: up to $5,000 and three years, plus a one-year license loss. Hit-and-run with injury or death: $2,500 to $5,000 and 180 days, a one-year loss for a first offense and permanent loss after. Failing to pass vulnerable road users with due caution: $500 and 2 points if injury results, $100 otherwise. Lying on an application or lending an ID: $200 to $500, up to six months in jail and a six-month to two-year loss; having someone take your exam: $200 to $500 and 30 to 90 days. Driving while suspended: $500 and up to six months more (first), $750, up to five days in jail and six months more (second), $1,000, 10 days in jail and six months more (third); suspended for no insurance, $500 plus one to two years and up to 90 days in jail; a crash with injury while suspended brings at least 45 days in jail; suspended for DUI, refusal or as a habitual offender, $500, one to two years and 10 to 90 days in jail, and on school property or within 1,000 feet of a school 60 to 90 days rising to 180. Driving without a court-ordered interlock adds one year; driving while suspended for a repeat DUI or refusal is a fourth-degree crime. Lending a car to a driver suspended for DUI: $1,000 and up to 15 days in jail, and a 90-day forfeiture after a third offense. Owing six months of child support suspends the license. Boating DUI suspends both boating and driving privileges, with $250 to $1,000 fines and delays of three months to two years for offenders under 17.

Driver programs and surcharges

Drivers who reach 12 to 14 points in 24 months get a Notice of Scheduled Suspension and may attend a Driver Improvement Program (3 points removed, $75 MVC fee plus the provider's fee), request a hearing, or surrender the license; a one-year probation follows the program or restoration, and any moving violation in it brings a scheduled suspension. New permit holders enter a two-year probationary driver period; two or more moving violations totaling four or more points require the Probationary Driver Program (up to 3 points off), and failing it or another point violation suspends the license. A voluntary defensive driving course removes 2 points, may cut insurance, and counts once every five years; mature drivers 55 and older may take a six-hour course for an insurance discount and 2 points off.

Surcharges: six or more points in three years cost $150 for six plus $25 per additional point, billed yearly for three years, based on the posting date and unaffected by point reductions. Others: unlicensed driver $100; no insurance on a motorized bicycle $100; driving while suspended $250; no liability insurance $250; DUI or refusal $1,000 ($1,500 for a third within three years). Unpaid surcharges bring collection, liens and wage garnishment.

Point system

Points are added for each moving-violation conviction and stay on the record (all since March 1, 1974). Out-of-state moving violations add 2 points. Each year without a violation or suspension removes up to 3 points, never below zero. Traffic laws apply on highways, parking areas, driveways and government grounds. Point values: racing, reckless driving, tailgating, failing to pass right of an oncoming vehicle, improper passing of a school bus, and speeding 30 mph or more over are 5; leaving a crash with injury is 8; improper passing on the right or in a no-passing zone, speeding 15 to 29 over, unsafe driving (third offense) and passing a frozen dessert truck are 4; improper turns, U-turns, turns at a light, a hand-held phone (third conviction) and driving a construction vehicle over 45 mph are 3; and most others, including careless driving, failing to yield, failing to observe signals, stop or yield signs, following too closely on a turnpike, speeding 1 to 14 over, failing to signal, Move Over violations and leaving a crash without injury, are 2. New Jersey belongs to the Nonresident Violator Compact (unresolved out-of-state citations suspend your license; 44 states plus D.C.; not Alaska, California, Michigan, Montana, Oregon or Wisconsin) and the Driver License Compact (out-of-state violations join your record; Georgia, Massachusetts, Michigan, Tennessee and Wisconsin are not members).

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