Car Seat Laws in Oregon: Ages, Weights, and Fines

Oregon car seat laws set four stages based on your child’s age, weight, and height. Children must ride rear-facing until age two. After that, they need a forward-facing seat with a harness until they weigh at least 40 pounds. From 40 pounds up, they need a booster seat until they are either eight years old or four feet nine inches tall, whichever comes first. Once the adult seat belt actually fits, the booster can come out. The driver, not the parent riding along, is the one cited if a passenger under 16 isn’t properly restrained.¹

Rear-Facing: Birth to Age 2

Children under two must ride in a rear-facing car seat. A rear-facing seat may never be placed in a front seating position with an active airbag.²

Age two is Oregon’s legal floor, not a recommended switch date. The American Academy of Pediatrics and NHTSA both advise keeping a child rear-facing until they outgrow the seat manufacturer’s height or weight limit, which with many convertible seats means staying rear-facing well past the second birthday.³

Forward-Facing With a Harness: Age 2 to 40 Pounds

Once a child outgrows the rear-facing seat, Oregon requires a forward-facing car seat with a harness until the child weighs at least 40 pounds or reaches the upper weight limit of the specific seat being used.² Children under 40 pounds must be in a seat with a five-point harness, and the shoulder straps should sit at or above the child’s shoulders when forward-facing.⁴

NHTSA recommends staying in the harnessed seat until the child reaches the manufacturer’s maximum height or weight rating before moving to a booster.⁵

Booster Seat: 40 Pounds Until Age 8 or 4’9″

Children who weigh more than 40 pounds but are shorter than four feet nine inches must use a booster seat (or a harnessed car seat rated for their weight) until the vehicle’s adult seat belt fits them properly. Children who are eight years old or older are not legally required to use a child safety system, though they must still wear a seat belt.¹

Both thresholds matter. A child who turns eight but is still under four feet nine inches is no longer legally required to use a booster, but ODOT recommends continuing with one until the belt actually fits.⁶ Many children still need a booster somewhere between ages eight and twelve.

When Your Child Can Use the Seat Belt Alone

Oregon and NHTSA describe a proper belt fit the same way:²

The lap belt lies low across the upper thighs, not the stomach.
The shoulder belt lies flat across the collarbone and chest, not the neck or face.
The child can sit all the way back against the vehicle seat with knees bent comfortably over the edge and feet flat on the floor.
The child can stay in that position for the whole ride.

If any of those fail, keep the booster in regardless of age.

Front Seat Rules

Oregon has no law barring children from the front seat.² The one firm rule is that a rear-facing seat cannot be placed in front of an active airbag.⁷ ODOT, NHTSA, and the AAP recommend keeping children in the back seat through age 12 or 13 because front passenger airbags can seriously injure smaller occupants.⁶

Fines and Who Gets Cited

Failing to properly restrain a child passenger is a Class D traffic violation under ORS 811.210.¹ The base fine is $110.⁸ The driver is the one responsible for every passenger under 16, even if the child’s parent is riding as a passenger.

Exemptions

Medical. Under ORS 811.220, ODOT can issue a certificate of exemption if a physician, nurse practitioner, or physician’s assistant signs a statement explaining that a restraint would be impractical or harmful due to a medical condition, physical problem, or body size.²
Older vehicles without rear shoulder belts. If the rear seating positions have only lap belts, a child over 40 pounds may be secured by the lap belt alone.¹

Free Inspections and Reduced-Cost Seats

One Grants Pass–area program documented a 57% misuse rate among the families it assisted in 2025, so a check by a certified technician is worth the appointment.⁹ Oregon programs include:

OHSU Doernbecher Tom Sargent Safety Resource Center in Portland offers free weekday inspections by appointment and monthly Saturday clinics. Call 503-494-3735 or email safety@ohsu.edu.⁴
Randall Children’s Hospital Child Injury Prevention Program in Portland takes Wednesday appointments and offers low-cost seats to families on SNAP, WIC, TANF, or OHP. Call 503-413-4005.²
Grants Pass Fire Rescue offers convertible and combination seats for $30 and booster seats for $10 to Josephine County families on OHP or WIC, with appointments every other month.⁹
Parenting Hub serves the mid-Willamette Valley at scheduled clinic events, with a $30 co-pay for standard seats and $10 for backless boosters for families on WIC, SNAP, or TANF. Call 503-485-3219, ext. 2.¹⁰
Umatilla-Morrow Community Head Start offers reduced-cost seats to low-income families in Morrow, Umatilla, and Wallowa counties with proof of OHP, Oregon Trail Card, WIC, or SSI. Call 541-564-6878.¹¹

For other locations and scheduling, the ODOT Transportation Safety Office can be reached at 503-986-4199.²

1
Oregon Public Law. ORS 811.210 — Failure to Properly Use Safety Belts
2
Oregon Department of Transportation. Belts and Seats
3
HealthyChildren.org (AAP). Car Safety Seats — Information for Families
4
OHSU Doernbecher. Car and Street Safety
5
NHTSA. Car Seats and Booster Seats
6
Oregon Department of Transportation. ODOT Car Seat Flyer
7
City of Hermiston Police Department. Police FAQs
8
Oregon Impact. Booster Seats
9
City of Grants Pass. Child Safety Seat Program
10
Parenting Hub. Car Seat Clinics
11
211info. Umatilla-Morrow Community Head Start Car Seat Program