Is Booster or Car Seat a Law in Hawaii?

June 24, 2023 - 3:15 am - 3 min read


In Hawaii, the safety of children is a priority when it comes to car travel. As such, car seats and booster seats have been established as safety requirements for children under a certain age and weight. Parents and caregivers must know and adhere to these laws to protect their young ones from car-related injuries and fatalities. In this article, we will discuss the laws surrounding booster and car seats in Hawaii and the consequences of breaking them.

Hawaii Car Seat Laws Explained

Hawaii law requires that children under the age of 4 ride in either a rear-facing car seat or a forward-facing car seat with a harness. Children between the ages of 4 and 8 must be secured in a child safety seat or booster seat while riding in the back seat of a vehicle. The seat must be appropriate for the child’s height and weight. If a child is over 4’9″ tall or over 40 pounds, they are no longer required to ride in a booster seat; however, they must wear a seat belt.

Consequences of Breaking the Law

Parents who violate Hawaii’s car seat laws can face consequences including fines and court appearances. The fine for breaking this law in Hawaii is up to $500, and the parent or caregiver may also be required to attend a court hearing. If the parent receives a court summons, it is important to attend the hearing and plead guilty or not guilty accordingly.

Other Safety Measures to Consider

While the law in Hawaii requires children under 8 years old to use booster or car seats, there are other safety measures to consider. Children should never be left unattended in vehicles, regardless of the temperature outside. The temperature inside a parked car can rise very quickly, even on a mild day. This can cause heat stroke, which can be fatal. Additionally, children should always wear seat belts and not play with them while riding in the car.

Choosing the Right Car Seat

When choosing a car seat, parents should ensure that it is appropriate for their child’s height and weight, and that it meets federal safety standards. Age is also a factor to consider when choosing a car seat. A rear-facing car seat is designed for infants and toddlers up to age 2, while a forward-facing car seat is designed for children older than 2 and weighing more than 20 pounds. Booster seats are intended for children between the ages of 4 and 8, who have outgrown their forward-facing car seat.


Hawaii law requires the use of child car seats and booster seats for children under a certain age and weight. These laws are in place to help protect children from injuries and fatalities in car accidents. Parents and caregivers ignoring these laws can face fines and court appearances. Additionally, it is important that parents always choose the right car seat for their child’s age, height, and weight, and follow all other recommended safety measures. Let’s make sure Hawaii’s roads are safe for our little ones.


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