Safe Kids Placer County is holding a seat check Saturday event for parents of kids up to age 8 from 10 a.m. to 2 p.m. today at the Roseville Babies R Us. The event kicks off Child Passenger Safety Week, which is a national effort to remind parents and caregivers of the lifesaving effect child safety seats have in protecting young children. “Team members from Safe Kids Placer County will be checking car safety seats to make sure families have them installed properly,” said Jim Owens, coordinator for Safe Kids Placer County in a news release. “Every parent and caregiver out there needs to make sure their children are safely restrained – every trip, every time.” Three out of four child safety seats are improperly installed in vehicles, according to research by the National Highway Traffic Safety Administration.. Here are four guidelines based on age and size to help parents and caregivers determine which restraint system is best suited to protect their children: Infants (ages 0-1): Keep infants in rear-facing child safety seats in the back seat until at least age 1 and at least 20 pounds. Toddlers (ages 1-4): Children in this age group typically outgrow their infant seat at 20 pounds. At that point, they should still remain rear facing in their convertible car safety seat until they reach the maximum rear-facing weight limit, typically 30-35 pounds. Young children (ages 4-8): Booster seats should be used in the back seat at around age 4 or when they reach 40 pounds, until the vehicle seat belts fit properly. Seat belts fit properly when the lap belt lays across the upper thighs and the shoulder belt fits across the chest (usually at age 8 or when they are 4’9” tall). Children (age 8 and up): When children outgrow their booster seats, (usually at age 8 or when they are at least 4’9” tall) they can use the adult seat belts in the back seat. They fit properly when the lap belt lays across the upper thighs and the shoulder belt fits across the chest. For more information on First 5 Placer, visit www.first5placer.org.