Law enforcement agencies will start to enforce a new booster-seat law for children starting May 5.

The law will require car seats until riders are 8, rather than 5. Children taller than 4 feet 9 inches are exempt.

The Utah Legislature approved the change on the final day of its 2008 session.

Advocates say as children get older than 5, parents tend to forget about keeping them in a child or booster seat for their safety.

Sen. Gregory Bell says the kids try to use adult seat belts that don't fit well.

The Fruit Heights Republican says some children end up putting the shoulder strap behind them.