LANSING, Mich. -- Michigan has officially adopted an expanded child safety seat law for motor vehicle travel.

The revised law means children under age 8 will have to travel in some sort of child restraint system unless they have grown to 4 feet 9 inches.

Most children between the ages of 4 and 8 will be using booster seats.

More than 30 other states already have expanded their child safety seat laws this decade.

Research suggests proper use of the safety seats provides more protection for children in auto accidents. Sponsors of the legislation said more than 90 percent of children between 4 and 8 years old who are seriously injured in auto accidents aren't restrained in a booster seat.

Violators will face fines and courts costs of up to $65 per offense.

Booster seats can be found at several different stores, a no-back booster costs about $15 and a high-back ranges from $20-$100 depending on the style.

For a list of seat checks and valuable information visit michigansafekids.org.