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Maryland driving lesson · Other Important Rules

Air bags, anti-lock brakes & headsets

A 3-minute lesson from the Maryland course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Other Important Rules
Checkpoint questions
6
Source pages
52, 53

Air bags and anti-lock brakes are built to protect you, but only if you use them right. Sit back, buckle up, keep kids in back, and let ABS do the pumping for you.

For the best air bag protection:

  • Use air bags together with your lap and shoulder belt
  • Sit as far back from the steering wheel as possible
  • Children in rear-facing seats never ride in front of a passenger air bag
  • Children under 13 ride buckled in a rear seat, in a child seat or seat belt
Handbook p. 52 ↗
10-12 inches

Space to keep between the steering wheel and your chest

Handbook p. 52 ↗

Know the rule

Pregnant women: place the lap belt under the abdomen, as low as possible on the hips and across the upper thighs, and the shoulder belt over the rounding of the belly.

Handbook p. 52 ↗
Seat belt icon (pictogram)
Seat belt worn across the lap and shoulder

Anti-lock Braking System (ABS)

A system that helps keep your wheels from locking so you can control the car. When the computer detects a wheel locking, ABS pumps the brakes much faster.

Handbook p. 52 ↗

Know the rule

When ABS engages you may hear a rumble from the brakes and feel the brake pedal vibrate under your foot. See your owner's manual for more.

Handbook p. 53 ↗

Know the rule

Without ABS, pump the brakes to prevent skidding.

Handbook p. 28 ↗

Know the rule

You may not drive with earplugs, headsets, or earphones in both ears. Hearing aid devices are allowed.

Handbook p. 53 ↗

Put it into practice

You brake hard on a wet road, hear a rumble, and feel the pedal vibrate under your foot. That's normal: ABS is pumping the brakes much faster so the wheels don't lock and you keep control.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

How far back from the steering wheel should you sit for the best air bag protection?
  1. Less than 5 inches
  2. 10 to 12 inches
  3. 20 to 24 inches
  4. As close as possible

Answer: 10 to 12 inches

Try to keep 10-12 inches between the steering wheel and your chest for the best air bag protection.

Handbook p. 52 ↗
Where should a pregnant driver place the lap portion of the seat belt?
  1. Directly across the abdomen
  2. As high as possible on the waist
  3. Low on the hips, under the belly
  4. Loosely across the lap

Answer: Low on the hips, under the belly

Pregnant women should place the lap belt low on the hips, under the abdomen, and the shoulder belt over the belly's rounding.

Handbook p. 52 ↗
Should a child in a rear-facing car seat ever ride in the front seat with a passenger air bag?
  1. Yes, if the air bag is turned off manually
  2. Yes, for trips under 10 minutes
  3. Yes, if the seat is reclined
  4. No, never

Answer: No, never

Children in a rear-facing car seat should never ride in the front seat of a vehicle with a passenger air bag.

Handbook p. 52 ↗
Where should children under 13 ride, according to the handbook?
  1. Buckled up in a rear seat
  2. In the front passenger seat if belted
  3. Anywhere, as long as they are buckled
  4. In the front seat only if over 4 feet tall

Answer: Buckled up in a rear seat

Children under 13 should ride buckled up in a rear seat, either in a child safety seat or with a seat belt.

Handbook p. 52 ↗
What might you feel or hear when ABS engages?
  1. Complete silence and a soft pedal
  2. A warning chime and seat vibration
  3. A rumble and a vibrating pedal
  4. The engine shutting off briefly

Answer: A rumble and a vibrating pedal

When ABS engages, you may hear a rumble from the brakes and feel the brake pedal vibrate.

Handbook p. 53 ↗
ABS causes your wheels to lock up faster to help you stop sooner.
  1. True
  2. False

Answer: False

ABS is designed to prevent wheels from locking up, not to make them lock up faster.

Handbook p. 52 ↗
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