Maine car seat laws

29-A M.R.S. § 2081 · Last checked September 23, 2026

Car seat stages

The statute text comes first. Numbers are a summary for comparison, not a replacement for the law.

Rear-facing seat

Statute text

When a child who is less than 2 years of age is being transported in a motor vehicle that is required by the United States Department of Transportation to be equipped with seat belts, the operator shall ensure that the child is properly secured in a rear-facing child restraint system or convertible child restraint system properly secured in the rear-facing position in accordance with the child restraint system manufacturer's instructions and the vehicle manufacturer's instructions, except if the child is in a convertible child restraint system and the child exceeds the manufacturer recommended weight or height limit for the rear-facing position the child may be properly secured in a forward-facing position in accordance with the child restraint system manufacturer's instructions and the vehicle manufacturer's instructions.

§ 2081(2-A).

What the law sets

Rear-facing seat required by law: Yes
Rear-facing until age: 2 years
Rear-facing until weight: Not addressed in statute
No number in § 2081(2-A); a child in a convertible seat may face forward once over the manufacturer's rear-facing weight or height limit.
Rear-facing until height: Not addressed in statute
No number in § 2081(2-A); a child in a convertible seat may face forward once over the manufacturer's rear-facing weight or height limit.
Leaving rear-facing: Meeting any one listed limit is enough
A child leaves rear-facing at age two, or earlier in a convertible seat on exceeding its rear-facing manufacturer weight or height limit.

Recommended (not law)

NHTSA

Children under age 1 should always ride in a rear-facing car seat. Keep your child rear-facing as long as possible — it's the best way to keep them safe — until they reach the top height or weight limit allowed by the car seat's manufacturer.

NHTSA – Car Seats and Booster Seats

AAP

All infants should ride rear-facing, starting with their first ride home from the hospital, and should continue riding rear-facing as long as possible until they reach the highest weight or height allowed by their car safety seat's manufacturer.

HealthyChildren.org (AAP) – Car Safety Seats: Information for Families

Forward-facing harness seat

Statute text

When a child who is 2 years of age or older and who weighs less than 55 pounds is being transported in a motor vehicle that is required by the United States Department of Transportation to be equipped with seat belts, the operator shall ensure that the child is properly secured in a child restraint system with an internal harness in accordance with the child restraint system manufacturer's instructions and the vehicle manufacturer's instructions except that, if the child exceeds the child restraint system manufacturer's recommended height limit for the child restraint system, the operator shall ensure that the child is properly secured in a federally approved belt positioning seat.

§ 2081(2-B).

What the law sets

Forward-facing harness required by law: Yes
A seat with an internal harness is required; it is not required to face forward.
Harness until age: Not addressed in statute
No upper age in § 2081(2-B); the harness stage ends on weight.
Harness until weight: 55 lb
The rule covers a child who weighs less than 55 pounds, so a child of exactly 55 pounds is no longer covered.
Harness until height: Not addressed in statute
No number in § 2081(2-B); a child over the harness seat's manufacturer height limit moves to a belt-positioning seat.
Leaving the harness: Meeting any one listed limit is enough
A child leaves the harness at 55 pounds, or earlier on exceeding the harness seat's manufacturer height limit.

Recommended (not law)

NHTSA

Once a child outgrows the rear-facing car seat, they are ready for a forward-facing car seat with a harness and tether. Keep the child in the forward-facing seat until they reach the top height or weight limit allowed by the car seat's manufacturer, then move to a booster seat, still in the back seat.

NHTSA – Car Seats and Booster Seats

AAP

Children should use a forward-facing car seat with a harness after outgrowing the rear-facing weight or height limit. It is best for children to ride in a seat with a harness as long as possible, at least to 4 years of age.

HealthyChildren.org (AAP) – Car Safety Seats: Information for Families

Booster seat

Statute text

The operator shall ensure that a child who weighs less than 80 pounds, who is less than 57 inches in height and who is less than 8 years of age is properly secured in a belt positioning seat or other child restraint system in accordance with the child restraint system manufacturer's instructions and the vehicle manufacturer's instructions.

§ 2081(3)(A).

What the law sets

Booster required by law: Yes
A belt-positioning seat or other child restraint system is required.
Booster until age: 8 years
Booster until weight: 80 lb
Booster until height: 57 in (4 ft 9 in)
Leaving the booster: Meeting any one listed limit is enough
The rule covers a child who is under 80 pounds, under 57 inches and under eight; meeting any one of the three ends it.

Recommended (not law)

NHTSA

Keep your child in a booster seat until they are big enough to fit in a seat belt properly — the lap belt lying snugly across the upper thighs (not the stomach) and the shoulder belt snug across the shoulder and chest (not the neck or face).

NHTSA – Car Seats and Booster Seats

AAP

All children whose weight or height exceeds the forward-facing limit for their car safety seat should use a belt-positioning booster seat until the vehicle seat belt fits properly, typically when they have reached 4 feet 9 inches in height and are 8 to 12 years of age.

HealthyChildren.org (AAP) – Car Safety Seats: Information for Families

Seat belt

Statute text

The operator shall ensure that a child who is less than 18 years of age and who is not required to be secured under paragraph A or subsection 2‑A or 2‑B is properly secured in a seat belt.

§ 2081(3)(B).

What the law sets

Seat belt alone from age: 8 years
Seat belt alone from height: 57 in (4 ft 9 in)
Moving to the seat belt: A combination of conditions (see statute text)
A child may use the belt once eight years old, 57 inches tall or 80 pounds; there is no belt weight field, so the condition is written out.
Moving to the seat belt — conditions: age>=8yr OR height>=57in OR weight>=80lb

Recommended (not law)

NHTSA

Once a child is big enough to fit in a seat belt properly, they can ride with just the lap-and-shoulder belt, but should still ride in the back seat — NHTSA recommends keeping children in the back seat at least through age 12.

NHTSA – Car Seats and Booster Seats

AAP

Children should transition to the vehicle seat belt once it fits properly, typically at about 4 feet 9 inches in height and 8 to 12 years of age; all children younger than 13 years should ride in the back seat.

HealthyChildren.org (AAP) – Car Safety Seats: Information for Families

Front seat

Many states have no front-seat age in statute. Where that is the case, we say so and cite the section we read.

Front seat — statute text: The operator shall ensure that a child who is less than 12 years of age is properly secured in the rear seat of a vehicle, if possible.
§ 2081(3)(C).
Minimum age for the front seat: 12 years
Under 12 must ride in the rear seat "if possible".
Conditions: A child under 12 rides in the rear seat if possible; the statute does not define when it is not possible.

Penalties

What a car seat ticket costs, and whether showing proof of a proper seat can cancel it.

First offense — fine: $50
§ 2081(2-A), (2-B), (3): $50 for the first offense.
Repeat offense — fine: $125 – $250
$125 for the second offense and $250 for the third and subsequent offenses (§ 2081(2-A), (2-B), (3)).
License points: None listed
§ 2081 sets no points. The demerit point list in Secretary of State rule 29-250 ch. 1 § 4 does not include child restraint violations, but the rule says its list is not exhaustive.
Fine waiver: No. A fine imposed under § 2081(2-A), (2-B) or (3) may not be suspended by the court.

Exemptions

Exempt means the statute excludes it. Silent means the statute does not address it.

Taxis: Not addressed in statute
§ 2081(6)(B) relieves taxi and limousine operators only of securing fare-paying passengers under subsection 3-A (adults); the child rules do not address taxis.
Rideshare (Uber, Lyft): Not addressed in statute
§ 2081 does not address transportation network companies.
Buses: Not addressed in statute
§ 2081 applies to vehicles required by the U.S. Department of Transportation to have seat belts and does not name buses.
Medical exemption: Exempt
§ 2081(4)(A-2): subsections 2-A, 2-B and 3 do not apply when a written opinion from a physician, nurse practitioner, physician associate or special-needs-trained technician calls for a different restraint; that recommended restraint must then be used.
Out-of-state vehicles: Not addressed in statute
§ 2081 does not address nonresident drivers or out-of-state vehicles.

How Maine compares

Maine is tied for 6th of 47 jurisdictions with a numeric booster age: 33 jurisdictions, including Maine, require a booster until age 8.

Compared with New Hampshire, Maine differs on: booster rules (from New Hampshire) and front-seat rules (from New Hampshire).

Law compared with the AAP recommendation

Maine law: a rear-facing seat is required until the child reaches age 2. AAP recommends: All infants should ride rear-facing, starting with their first ride home from the hospital, and should continue riding rear-facing as long as possible until they reach the highest weight or height allowed by their car safety seat's manufacturer.
Maine law: a forward-facing harness seat is required until the child reaches 55 lb. AAP recommends: Children should use a forward-facing car seat with a harness after outgrowing the rear-facing weight or height limit. It is best for children to ride in a seat with a harness as long as possible, at least to 4 years of age.
Maine law: a booster seat is required until the child reaches age 8, 80 lb, or 57 in, whichever comes first. AAP recommends: All children whose weight or height exceeds the forward-facing limit for their car safety seat should use a belt-positioning booster seat until the vehicle seat belt fits properly, typically when they have reached 4 feet 9 inches in height and are 8 to 12 years of age.
Maine law: a child may use the seat belt alone once this condition is met: age ≥ 8 yr or height ≥ 57 in or weight ≥ 80 lb. AAP recommends: Children should transition to the vehicle seat belt once it fits properly, typically at about 4 feet 9 inches in height and 8 to 12 years of age; all children younger than 13 years should ride in the back seat.

See every state side by side on the comparison pages.

Guides covering Maine

Sources

State law comes from the statute or state agency below. Recommendations come from NHTSA and the American Academy of Pediatrics. The responsible agency is Maine Bureau of Highway Safety.

State law

29-A M.R.S. § 2081 — checked September 23, 2026
Code Me. R. 29-250 ch. 1 (demerit points)

Recommendations

NHTSA – Car Seats and Booster Seats — checked September 22, 2026
HealthyChildren.org (AAP) – Car Safety Seats: Information for Families — checked September 22, 2026

Disclaimer

This page summarizes Maine law for reference. It is not legal or medical advice. The statute text is the law; the numbers are our summary of it. Legal minimums are not safety recommendations: NHTSA and the AAP recommend keeping a child in each stage for as long as the seat allows. Check the statute or Maine Bureau of Highway Safety before relying on anything here.