Hawaii DMV Road Rules — 30 Questions with Answers

Total stopping distance is the ground you cover while reacting plus the distance needed to brake, which depends on speed, brakes, tires, and the road surface. Darkness can make hazards harder to spot, but the clock itself does not change how far the vehicle needs to stop.

Tip When judging how quickly you can stop, think about speed, reaction time, brakes, tires, and pavement, not the hour.

Set the front wheels so that the curb would stop the car if it started to roll: angle them toward the curb if the car points downhill and away from it if the car points uphill. Apply the parking brake every time.

Tip Downhill means wheels toward the curb; uphill with a curb means wheels away from it.

Blinking your brake lights or turning on the hazard flashers lets the people behind you know early that traffic is stopping for a crash ahead, which gives them room to slow down. These signals warn of danger or an unexpected slowdown; they are not a way to thank another driver or something to use while reversing out of a parking spot.

Tip Hazard flashers are for warning others of a sudden danger, not for excusing double-parking or for ordinary driving.

Wet or icy pavement gives the tires less grip, so any slowing should be done before a curve or intersection, not in the middle of it. Likewise, shift into a lower gear before a steep downhill begins rather than after you are already descending.

Water on the pavement makes stopping take longer, so open up a gap of at least 4 to 5 seconds behind the vehicle ahead. Brake, steer and accelerate gently to avoid skidding.

Tip On wet pavement, plan on about twice your usual following distance so you have room to stop.

A siren or flashing red or blue lights mean an emergency vehicle needs the road. Move to the right edge, stop, and stay there until it has gone by; failing to do so breaks the law and puts lives at risk.

High speeds and heavy traffic on major highways leave little time to respond, so you need to stay focused, scan the road and mirrors continually, and be ready for hazards such as stalled vehicles, debris, or sudden slowdowns.

The headlight requirement begins 30 minutes after sunset, when fading daylight makes it harder for others to see you. Also turn them on at any hour when rain, snow, or fog limits visibility.

Flashing red lights mean children are getting on or off, so you must come to a full stop at least 20 feet behind the bus. Do not move again until the lights go off and the stop arm has been pulled back in.

If a school bus stops on a two-lane road with its red lights flashing, traffic approaching from either direction has to stop and stay put until the lights go off and the bus moves on. Simply slowing down is not sufficient, including when the bus is on the opposite side of the road.

Tip Drivers on the far side of a highway split by a physical divider, such as a raised median, are not required to stop.

When a crash cannot be avoided, the goal is to reduce the force of the impact. Something that yields absorbs energy better than a rigid object, a stationary object is less violent to hit than an oncoming vehicle, and a glancing contact is far less dangerous than a direct, head-on hit.

Passing must always be done on the paved, main part of the road. Pulling onto the shoulder or dirt edge to get by is never allowed, even next to a vehicle that is turning left.

The picture shows that the mirrors leave a blind spot on each side of the car, where another vehicle may not appear in any mirror. After signaling and checking the mirrors, a quick look over the shoulder is the only way to confirm that the space beside you is clear.

When vehicles arrive at the same moment, the driver to the left gives way to the driver to the right, and anyone turning left also gives way to oncoming traffic. Nobody sits to the right of the yellow car, so it moves first; the blue car yields only to the yellow car; the truck, turning left, waits for both.

You must not pass or go around a vehicle that has stopped for people at a crosswalk, because it may be hiding a child who is stepping into the road. Obeying the school speed limit and letting children cross first are things you must do, not things you must avoid.

Headlights are required from half an hour after sunset until half an hour before sunrise, plus whenever rain, fog, snow, or dim light makes people and vehicles hard to see. They help you see the road and help others see you.

A stop sign, a red signal, and a stop order from an officer directing traffic each require a full stop. The same duty applies in other cases too, such as a school bus with flashing red lights or a train approaching a railroad crossing.

A gap of at least 3 seconds gives you time to notice a problem ahead and stop: count the seconds from when the vehicle ahead passes a fixed point until you reach it. A gap of 1 second or less is too short to react, and in poor conditions you should leave even more space.

Tight or curving roads, intersections, railroad crossings, and wet or slippery pavement all leave less room for error. A lower speed buys you reaction time and cuts the distance you need to stop.

To indicate a right turn, stick your left arm through the driver's window and bend it up at the elbow so your hand points toward the sky. A straight, extended arm signals a left turn, while an arm bent downward signals that you are slowing down or stopping.

The law requires headlights starting 30 minutes after the sun sets and ending 30 minutes before it rises, which means that in the morning you can turn them off when sunrise is half an hour away. Leave them on longer when rain, fog, or snow limits visibility.

No one number is safe in every situation. Choose your speed based on the weather, the road surface, how far you can see and how heavy traffic is, and remember that driving under the limit can still be too fast in poor conditions.

When the wipers fail in rain or snow, ease off your speed at once, open the driver's window and look out of it if that is the only way to see, and then brake and leave the road at a safe spot. Wait there with your hazard flashers on until the weather clears or the wipers are fixed.

Before you back up, change lanes or brake suddenly, check the traffic behind you with your mirrors and by turning your head. Look over your shoulder through the rear window when backing, and check your blind spot before moving into another lane. These are the moments when a collision with someone behind you is most likely: backing takes you toward whatever is back there, and if you change lanes or brake hard, a vehicle coming up behind you may have no room to avoid you.

Many states require every occupant to buckle up; in some, adults in the back seat are not legally required to, but a belt protects everyone, so every occupant should wear one. Young children must ride in a child safety seat that fits their age and size.

Emergency vehicles may stop or turn without warning, and others may be following, so the law requires you to stay back at least 500 feet once one has passed. Trailing it closely is dangerous, and after it goes by you may resume normal driving while keeping that distance.

Most states require a parallel-parked car to have its wheels within 12 inches of the curb, and some allow up to 18, so staying within 12 inches keeps you legal in either case. A wider gap leaves the car sticking out into the travel lane, where it becomes a hazard to passing traffic.

Tip A gap of roughly 6 to 12 inches keeps you within the limit while protecting your tires from the curb.

Slippery pavement gives your tires less traction, so lose speed before a curve or intersection rather than while you are in it. Speeding into a curve, or waiting until you are already descending a hill to downshift, makes a skid more likely.

After a blowout, hold the steering wheel firmly, take your foot off the accelerator, and keep the car going straight while it loses speed on its own. Braking hard can make you lose control, so stop only after you have eased off the road to a safe spot.

Cutting across a parking lot, gas station, or other property to avoid a sign or signal is illegal. The only exception is when a police officer directs traffic that way.