Below depicts general recommendations from NHTSA for the best car seat at every age, but use the car seat finder to find the best seat for your child. Effective November 1, 2019, all backseat passengers must be rear-facing until age 2. Age 8 and above: A child age 8 and older can sit in a regular seat using a seat belt. Age 8 and above: A child age 8 and older can sit in a regular seat using a seat belt. Most kids need to ride in a booster seat from about age four until ages 10 to 12 years. Ages 8 to 12. NO because boosters cant go in the front seat. Keep children in rear-facing safety seats as long as possible. It is not illegal under NY State law for a child passenger to ride in the front seat of a vehicle that has a passenger air bag, but it is dangerous. Children under age 8 can ride in an age-appropriate seat, harness, vest, or booster seat in conjunction with a vehicle seat belt but they cannot ride with a seat belt alone. Let your child know that his or her safety is your main concern and … If your pick-up truck does not have a back seat, then you can put a rear-facing car seat in the front seat ONLY if you are able to turn the airbag off manually. Children between 4 to 8 years old must be secured in a child safety seat restraint system. Some high-back booster seats have removable backs and can be converted to backless booster seats. 14 is the age when a child can sit in the front seat. Seat belts save lives and help prevent serious injuries in a traffic crash. Child passenger safety la ws vary from state to state, so it’s important you are familiar with the laws here in Pennsylvania. It is not illegal under NYS law for a child passenger to ride in the front seat of a vehicle that has a passenger air bag, but it is dangerous. Recent studies show that air bags can cause serious or fatal injuries to infants, children or small adults that sit in the passenger-side front seat. All children age 4 and younger must ride in approved child safety seats.
By law, children under age 2 should always ride in a rear-facing car seat. Child Passenger Safety Tips.

Most car seat laws do talk about size and weight in regard to child restraint use.

Seat belts save lives and help prevent serious injuries in a traffic crash. After the harness is removed, the seat can be used as a high back booster seat with a shoulder and lap belt. It turns out that my state (New Hampshire) has no laws regarding when a child can move into the front seat of the car. It is also normally safer for a child of any age to ride in the back seat of any vehicle.
What can I do to encourage them to continue to sit in the back seat? Nor, apparently, does New York or most other states. This is a scary thing to say but it is true. Any child younger than 4 years old must ride in a federally approved child safety seat that's properly secured by a safety belt or a universal child restraint anchorage system.

It depends on the proportions of your child's body, the shape of the vehicle seat, and where the seat belts are attached to the vehicle.

Children must normally use a child car seat until they’re 12 years old or 135 centimetres tall, whichever comes first. After the harness is removed, the seat can be used as a high back booster seat with a shoulder and lap belt. A child under the age of 4 years and 40 pounds shall be secured as described in (a) until they reach the upper limits of the rear-facing seat, then in a forward-facing child restraint equipped with a 5-point harness.