Driver Responsibility: The Seat Belt Law, Car Seats and the Child Passenger Safety Law, Air Bags, Car Condition, Snow and Ice, Carbon Monoxide, Starting a Parked Car, Idling, Steering, Stopping Distances, Braking, Signals, Driving in Reverse, Turning and Parking
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 3 "Driver Responsibility" (pp. 40–59).
Seat belts
The driver and all passengers of a passenger vehicle (car, van, pickup, SUV) must wear seat belts. For the driver, front-seat passengers and anyone under 18 it is a primary offense, so police may stop a vehicle for it alone; the driver answers for passengers under 18, and front-seat passengers 18 and over answer for themselves. Unbuckled back-seat occupants 18 and older can be ticketed under a secondary law when the vehicle is stopped for something else. GDL permit and probationary holders must belt everyone in every seat. Exempt: vehicles built before July 1, 1966, vehicles not required to have belts, and a physician-verified medical reason. A passenger in a wheelchair must be secured with a wheelchair and occupant securement device.
Belts improve crash survival by 60 percent, and a lap belt with shoulder strap makes survival three to four times more likely; hitting the dash or windshield at 30 mph is like falling from a three-story building. Belts keep you from being thrown out, slow your body with the car, and hold you in position to control the vehicle. Wear the lap belt low across the hips and the shoulder belt over the collarbone away from the neck, learn to release them quickly, buckle up in the back seat too, and never put two people in one belt.
Car seats and the child passenger law
Crashes are a leading killer of children; all child restraints made since January 1, 1981 must pass federal tests and carry a label saying so. Never face an infant seat forward, and always follow the seat's label and instructions. The law: children under 8 and under 57 inches (4 feet 9) ride in a rear seat in a forward-facing five-point harness seat or, once they outgrow it, a booster; children under 4 and under 40 pounds ride in a rear seat in a rear-facing five-point seat until they outgrow it, then a forward-facing five-point seat; children under 2 and under 30 pounds ride in a rear-facing five-point seat. All children under 8 sit in the rear seat; with no rear seat they may use the front, but a rear-facing seat may never face an active passenger air bag. The fine is $50 to $75 plus costs. An autocycle may not carry a child who requires a restraint.
Air bags
Air bags supplement belts in frontal crashes and saved 44,869 lives from 1987 to 2015; they inflate at up to 200 mph and can kill children in the front seat. NHTSA allows cutoff switches for vehicles without back seats and, by application, for medical conditions, drivers who cannot keep 10 inches between breastbone and wheel, and people who must carry infants or children 1 to 12 in front. Infants ride rear-facing in the back seat, children 12 and younger ride in the back, and everyone buckles up. Look for "air bag," SRS or SIR on the wheel and dash.
Car condition
Backup lights must work in reverse and may never be on while moving forward. Brakes that pull, feel taut, squeal or grind need checking; pump conventional brakes gently after water to dry them; you should stop within 25 feet at 20 mph; with ABS, apply steady pressure and never pump or jerk the wheel, and expect longer stops on loose gravel or snow. Check brake lights with a helper and replace broken covers. Keep high and low beams aligned and clean (other drivers flashing you on low beam may mean they are misaligned). Test the horn, used when passing, leaving a blind alley or driveway, or warning of danger. Steering should hold straight without shimmy or excess play. Keep tail and side lights working. Check tires for thumping, bumps, cuts and tread; check pressure cold against the owner's manual or door jamb; never drive on less than 1/16 inch of tread (about the edge of a penny) and do not mix radials with other types. Turn signals must click and flash; use hand signals until fixed. Repair cracked windshields, keep them clean, and remember add-on tint on windshields and front side windows is illegal.
Snow and ice: the law requires removing accumulated snow and ice from the hood, trunk, roof and windshield before driving; the fine is $25 to $75 even if nothing falls off, and up to $1,500 if dislodged snow or ice injures someone or damages property.
Carbon monoxide
Under the Rosa-Bonilla Family Act the MVC teaches CO safety. Carbon monoxide is odorless and colorless and builds up with an exhaust leak or badly tuned engine, an open trunk or tailgate, holes in the body, idling in a garage even with the door open, or a tailpipe blocked by snow, leaves or water. Symptoms include headache, dizziness, loss of consciousness, nausea, chest pain and confusion, but CO can kill before any appear. Remove the victim from the source, call 911, shut off the engine and get to fresh air.
Starting a parked car and idling
Walk around the vehicle first: children, bottles, cans and bicycles hide in the blind spots. Clean windows; adjust the seat so you reach all pedals, about an arm's length from the wheel; adjust mirrors; fasten belts; park or neutral with the parking brake set; lock the doors. More than 95 percent of driving information is visual: avoid colored lenses at night, prefer anti-reflective coatings, have an eye exam every two years, and know that a 60-year-old sees light about a third as well as a 20-year-old. Set the outside mirror so the driver-door handle tip shows in its lower right corner; a car passing on the left should appear in the outside mirror as it leaves the inside mirror. After starting, turn and look rather than trusting the mirrors, watch for pedestrians, bicycles and mopeds, signal and move off. New Jersey limits idling to three minutes; violators face $250 to $1,000, with exemptions such as traffic jams and drive-throughs.
Steering
Grip the outside rim at 9 and 3 o'clock, thumbs along the rim, never from the inside, to reduce air-bag injuries; hold firmly but not tightly, and keep both hands on except to shift or signal. Stay centered in the lane and keep right on two-lane roads. Hand-over-hand steering handles minor adjustments up to a half turn: push the wheel up from 9 or 3 toward 12 while the other hand crosses over and down, hands moving as much as 165 degrees, then reverse or let the wheel slip back under control; it suits precision maneuvers, curves, intersections and skid recovery. Never jerk the wheel violently while braking with ABS.
Stopping distances and braking
Stopping distance depends on reaction time, weather and visibility, vehicle weight, brakes, tires, road conditions and speed, and the faster you go the longer it takes. At 60 mph a vehicle covers 88 feet per second; typical reaction time is three-quarters of a second and deceleration about 14 feet per second.
| Speed | Reaction | Braking | Total |
|---|---|---|---|
| 10 mph | 11 ft | 8 ft | 19 ft |
| 20 mph | 22 ft | 31 ft | 53 ft |
| 30 mph | 33 ft | 69 ft | 102 ft |
| 40 mph | 44 ft | 123 ft | 167 ft |
| 50 mph | 55 ft | 192 ft | 247 ft |
| 60 mph | 66 ft | 277 ft | 343 ft |
| 70 mph | 77 ft | 376 ft | 453 ft |
Do not slam the brakes; apply steady, gentle pressure. With ABS never pump or jerk the wheel; an ABS car can lose control at only 35 mph if you jerk the wheel while braking, so practice in an empty lot. Use the right foot for both brake and gas, and the left foot only for a clutch.
Signals
Signal every turn, lane change, stop and slowdown, at least 100 feet before turning, and cancel the signal afterward. You must know the hand signals: arm down, palm back, for stopping or slowing; arm up for a right turn; arm straight out for a left turn. The horn is a warning signal audible at least 200 feet; it may be sounded when passing outside business and residential zones; only emergency vehicles may use sirens, whistles or bells. Bicyclists, skateboarders and skaters may signal a right turn with the right arm straight out.
Driving in reverse
Check that the path is clear with mirrors and by turning. In reverse the vehicle goes the way you turn the wheel, and the front swings opposite to the turn. Turn your head and body to the right to see through the rear window without mirrors, right arm over the passenger seat, left hand on top of the wheel, at walking speed (2 to 4 mph); face forward only when stopped; use two hands when turning (palming one-handed can fail the road test). The road test requires backing about 100 feet straight; cameras and sensors have been allowed since August 31, 2016, but reversing principles come first.
Turning and the K-turn
Decide early; move to the proper lane and signal at least 100 feet before turning; never back up for a missed turn. Check mirrors and both sides, watch for motorcycles, bicycles and mopeds, signal then change lanes, slow before the intersection, keep a steady speed, follow the markings, stay in your lane through the turn, and cancel the signal. Three-point (K) turn: from the right edge, in a spot with good visibility and no traffic, signal left and move forward slowly turning left to within inches of the left edge; back slowly turning right to within inches of the right edge; move forward turning left and straighten. It is required on the road test.
Parking
Set the parking brake and shift to park, or in a manual to reverse or low. Facing downhill, turn the wheels toward the curb (park or reverse); facing uphill, turn them away from the curb (park or low). Angle parking: watch traffic, signal and slow, make sure the rear clears the parked cars, steer sharply in and straighten, then park with the brake set; backing out, walk around first, back slowly, tap the horn for pedestrians, stop and look again once you can see past the neighbors, remember the front swings opposite, and straighten once in the lane. Parallel parking is required on the road test; practice with markers 25 feet apart. Signal a stop and a right turn, pull alongside the front vehicle two to four feet away, check behind, back slowly about two feet with the wheel fully right, stop when your front clears the front car's rear bumper and check that the right rear wheel has not hit the curb, turn the wheel fully left and back slowly, stop when in line without touching the car behind, straighten and center, ending no more than six inches from the curb.
Practise this with New Jersey Driver License questions
More of this guide
Who must carry what, the 30-day interim and four-year digital license, basic, probationary, motorcycle, moped and CDL fees, the 6-point and 2+1+6 identity rules, GDL Options A, B and C with the six-month and 50-hour practice rules, the 11:01 p.m. to 5 a.m. and passenger restrictions, red decals, out-of-state and out-of-country drivers, non-driver IDs, organ donation, Sara's Law, Motor Voter and CDL classes and endorsements.
The 20/50 vision standard, the 50-question knowledge test and its 80 percent pass mark, test languages and interpreters, waivers for out-of-state licenses, the probationary year for 17-year-olds, the Safety Pledge to Nikhil, the 21-day voter deadline, the six-month and three-month practice rules, the road test checklist and elements, and why a vehicle is rejected.
The 25, 35, 50, 55 and 65 mph limits and doubled fines, Safe Corridors, center-line passing rules, keeping right, who you yield to, the crosswalk law and its penalties, controlled and uncontrolled intersections, traffic circles, acceleration and deceleration lanes and weave lanes, right on red and left turns, when you must stop, 15 feet from the tracks, 25 feet from a school bus, 300 feet behind emergency vehicles, the Move Over law, headlight rules, the no-parking list, the hand-held phone fines and littering.
The crash-prevention formula, road rage and #77, the distraction list, tired driving and highway hypnosis, one car length per 10 mph and the three-seconds-plus rule, the car-length table, being passed, hydroplaning at 35 and 55 mph, studded tires, ABS on ice, six seconds on snow, the night stopping table, 12 seconds ahead in the city, doubled work-zone fines, ignition locks, skids, 300-foot flares, running off the pavement, water escapes, stalling on tracks, brake and blowout failures, crash choices and the $500 and 10-day reporting rules.
One drink equals a half ounce of alcohol, the 0.08 and 0.01 limits and crash risk multipliers, signs police watch for, the Hero Campaign, marijuana's effects, DUI penalties for first, second and third offenses, implied consent and the breath test, the 0.05 interlock, IDRC detention, fines for reckless driving, hit-and-run, driving while suspended and the Safe Passing Law, the 12-to-14-point notice and driver programs, surcharges, points and the interstate compacts.
Pedestrian death rates by speed, unmarked crosswalks and the crosswalk penalties, the 30-foot rule, the four-foot and 25 mph Safe Passing Law, blind pedestrians, motorcycles, no-zones of 10 to 20 and 200 feet, yielding to buses, 25 mph mopeds, bicycles and skaters, illegal motorized scooters, low-speed vehicles, train rules and the 100-foot passing ban, horses, titling within 60 days, plate mounting and covers, two-year inspections and mandatory insurance.
Signal layout and colors, arrows and flashing signals, unlit signals as four-way stops, pedestrian signals, the sign shape and color table, warning, road work, guidance and regulatory signs, the crossbuck as a yield sign, truck route signs, yellow and white line rules, edge lines, crosswalks, stop lines, HOV diamonds, slow-moving vehicle triangles, rumble strips, speed humps and roundabouts.