Illinois Car Seat Law: Rear-Facing Under 2, Boosters Under 8

Last reviewed: October 18, 2026. This article is general information, not legal advice. Illinois statutes are amended from time to time; check the current text of 625 ILCS 25/4 before you rely on any detail.

Illinois packs its car seat rules into one short law, the Child Passenger Protection Act. It covers every child under 8, added a rear-facing rule for children under 2 in 2019, and has an unusual way to get a first ticket thrown out: a lesson from a car seat technician. Here's what the Act requires, what it costs to break it, and where it falls short of safety advice. For other states, see our guides to the California booster seat law, Ohio car seat laws, Texas car seat laws and Florida car seat laws.

Short answer: under the Illinois car seat law, 625 ILCS 25/4, anyone transporting a child under 8 must secure the child in an appropriate child restraint system, which includes a booster seat. A child under 2 must ride rear-facing unless the child weighs 40 pounds or more or is 40 inches or taller. Children 8 to 15 must wear seat belts. A first violation is a $75 petty offense and a repeat violation $200.

The rules by stage: Illinois law vs safety advice

The table compares what Illinois law requires with what NHTSA and the American Academy of Pediatrics (AAP) recommend. The recommendations are not law, but they reflect how children are best protected in a crash.

The word "appropriate" does a lot of work. Illinois doesn't list a seat type for each age after 2; it expects a restraint that suits the child, used as the maker intends. In practice, that means following the height and weight limits on your car seat's label, and not moving a child up a stage just because a birthday has passed.

The 2019 rear-facing rule

The under-2 rear-facing requirement came from Public Act 100-672, effective January 1, 2019. Two details are easy to miss:

• The 40/40 exception. A child under 2 who weighs 40 pounds or more or is 40 inches or taller doesn't have to ride rear-facing. Many convertible seats allow rear-facing well past those numbers, and NHTSA and the AAP recommend using them.
• Wider vehicle scope. The rear-facing paragraph applies to "a motor vehicle of the first division or motor vehicle of the second division weighing 9,000 pounds or less." Unlike the main under-8 rule, it doesn't say "non-commercial."

Who must provide the seat

Section 4 makes the person transporting the child responsible for securing the child. It also puts a duty on parents: "The parent or legal guardian of a child under the age of 8 years shall provide a child restraint system to any person who transports his or her child." If grandparents or a babysitter drive your child, hand over the seat.

Front seat rules

The Child Passenger Protection Act does not set a minimum age for the front seat. Safety advice is to keep children in back: NHTSA advises the back seat at least through age 12, and the AAP says all children younger than 13 should ride in the back. Never put a rear-facing seat in front of an active passenger airbag.

Exemptions and special cases

• Lap-belt-only back seats: a child weighing more than 40 pounds may ride in the back seat wearing only a lap belt if that seat has no combination lap and shoulder belt (Section 4).
• Physical disability: under Section 7, the Act doesn't apply to a child with a physical disability that prevents appropriate restraint, if a physician certifies the nature of the disability and why the restraint is inappropriate.
• Motorcycles: Section 3 says "motor vehicle" in the Act doesn't include motorcycles.
• Vehicles outside the scope: the under-8 rule covers non-commercial first-division vehicles (in general, ordinary passenger vehicles), trucks with seat belts, second-division vehicles up to 9,000 pounds GVWR, and recreational vehicles.

Taxis, Uber and Lyft

The Act doesn't mention taxis, limousines or rideshare services. The main under-8 rule is limited to non-commercial first-division vehicles, which suggests a commercial vehicle such as a taxi may fall outside it, but the Act doesn't define how that applies to a rideshare driver using a personal car, and the rear-facing rule for under-2s isn't limited to non-commercial vehicles. Don't rely on an exemption. Bring your child's seat or a travel booster.

Penalties and getting a first ticket dismissed

Under 625 ILCS 25/6:

• First violation: a petty offense with a $75 fine.
• Second or subsequent violation: a petty offense with a $200 fine.
• Avoiding a conviction (first violation of Section 4 only): you won't be convicted if you produce in court satisfactory evidence that you have an approved child restraint system and proof that you completed an instructional course on installing it under Section 6a. This option doesn't apply to a second or later violation.

How the course works (Section 6a). You schedule a child safety instructional course with a certified child passenger safety technician and show them a copy of your citation. The course covers proper installation and includes an inspection of your seat. It must be finished before your mandatory court date. When you complete it, the technician gives you a letter, on a form required by the Illinois Department of Transportation, to present in court.

Civil cases: under Section 5, failing to secure a child under 8 in an approved car seat is not contributory negligence and isn't admissible as evidence in a civil trial.

Where to get a free car seat check in Illinois

Use NHTSA's car seat inspection station search to find a certified child passenger safety technician near you. NHTSA says technicians inspect seats free of charge in most cases, and some locations offer virtual inspections. If you've received a ticket, ask the technician about the Section 6a instructional course and the letter you'll need for court.

Practical tips for Illinois parents

• Keep your child rear-facing to the seat's limits, even past age 2 and past 40 pounds if the seat allows.
• Treat the 8th birthday as the legal minimum for leaving a booster, not the target. Move to a belt when it fits.
• Keep children under 13 in the back seat.
• If you get a first ticket, book a technician's course right away; it must be done before your court date.

Related reading: children riding in the open bed of a truck.

Sources

• 625 ILCS 25/4, Child Passenger Protection Act (child restraint requirement): Illinois General Assembly (read via the Internet Archive copy of April 30, 2025)
• 625 ILCS 25/4a and 25/4b, seat belts for children 8 and older: 25/4a and 25/4b (Illinois General Assembly)
• 625 ILCS 25/5, 25/6, 25/6a and 25/7 (civil cases, penalties, instructional course, disability exemption): 25/5, 25/6, 25/6a, 25/7 (Illinois General Assembly)
• NHTSA, Car Seats and Booster Seats (recommendations and inspection station locator): nhtsa.gov
• American Academy of Pediatrics, Car Seats: Information for Families: HealthyChildren.org