Seat belts, air bags and child seats

Key points

1. All drivers and passengers 8 and older, front and back seats, must wear safety belts.

   Source: Handbook p. 23

   “Illinois law requires all drivers and passengers (front and back seats) age 8 and older to wear safety belts, even if the vehicle is equipped with air bags.”
   Illinois Rules of the Road, Handbook p. 23

2. The driver must make sure all passengers obey the belt and child passenger laws.

   Source: Handbook p. 23

   “It is the responsibility of the driver to ensure ALL passengers obey the safety belt law and the Child Passenger Protection Act.”
   Illinois Rules of the Road, Handbook p. 23

3. Children under 8 must be in an appropriate child safety restraint, including booster seats.

   Source: Handbook p. 23

   “The Child Passenger Protection Act requires all children under age 8 to be properly secured in an appropriate child safety restraint system.”
   Illinois Rules of the Road, Handbook p. 23

4. Children must ride rear-facing until age 2 unless they weigh more than 40 pounds or are more than 40 inches tall.

   Source: Handbook p. 24

   “Illinois law requires children to be properly secured in a rear-facing child restraint system until age 2 unless they weigh more than 40 pounds or are more than 40 inches tall.”
   Illinois Rules of the Road, Handbook p. 24

5. Sitting 10 to 12 inches from the air bag is desirable.

   Source: Handbook p. 23

   “A distance of 10-12 inches between the driver and the air bag is desirable”
   Illinois Rules of the Road, Handbook p. 23

6. Children 12 and younger should ride in the back seat.

   Source: Handbook p. 23

   “It is recommended that children ages 12 and younger be properly secured in the back seat.”
   Illinois Rules of the Road, Handbook p. 23

7. Never install a rear-facing child seat in front of an active air bag.

   Source: Handbook p. 23

   “Rear-facing child safety seats should never be installed in front of an active air bag.”
   Illinois Rules of the Road, Handbook p. 23

8. Wear the lap belt across the hip bones, never across the stomach.

   Source: Handbook p. 23

   “The lap belt should be worn across the hip bones and should never be positioned across the stomach or soft part of the abdomen.”
   Illinois Rules of the Road, Handbook p. 23

Numbers to know

3 questions from the Illinois practice test

1. 1. Who is required to wear a safety belt under Illinois law?

   1. Only the driver and front-seat passengers
   2. Only passengers younger than age 8
   3. Drivers and passengers in front and back seats age 8 and older
   4. Only occupants in vehicles without air bags
   Show answer

   Drivers and passengers in front and back seats age 8 and older. Illinois requires drivers and passengers in both front and back seats who are age 8 or older to wear safety belts, even when air bags are present. Limiting the rule to the front seats misses rear passengers, and air bags do not replace belts. Children under 8 fall under child-restraint requirements instead. A quick cue is to identify the occupant's age and seating position, then apply the matching protection rule.

2. 2. Until what age must an Illinois child generally use a rear-facing child restraint?

   1. Until age 2, unless the child weighs more than 40 pounds or is more than 40 inches tall
   2. Until age 1 regardless of weight or height
   3. Until age 4 unless the child can sit in the front seat
   4. Until age 8 in every circumstance
   Show answer

   Until age 2, unless the child weighs more than 40 pounds or is more than 40 inches tall. Illinois requires a child to remain properly secured in a rear-facing child restraint until age 2, with an exception when the child weighs more than 40 pounds or is more than 40 inches tall. Age 1 is too early, and age 4 or age 8 overstates this particular rear-facing requirement. Check both the child's age and the two physical exceptions before changing restraint type.

3. 3. Under Illinois' Child Passenger Protection Act, which children must use an appropriate child safety restraint system?

   1. Only children under age 2
   2. All children under age 8
   3. Children under age 12, with no exception for an adult belt
   4. Only children seated in the front seat
   Show answer

   All children under age 8. Illinois requires every child under age 8 to be properly secured in an appropriate child safety restraint system. The rule includes booster seats, which must be used with a lap and shoulder belt. Limiting it to age 2 misses the broader child restraint requirement, and seat location does not determine whether the act applies. The under-12 choice confuses a recommendation about back-seat placement with the restraint threshold. Check the child's age and the restraint manufacturer's fit guidance before every trip, including short rides.

Source: the Illinois Rules of the Road, Chapter 4: Traffic Laws. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.