2003 Honda Civic Owner's Manual - Page 40

Protecting Children Checking Seat Belt Fit their thighs as shown, the child is probably big enough to wear the seat belt. However, if the shoulder belt touches or crosses the child's neck, or if the lap belt crosses the child's stomach, the child needs to use a booster seat. Do not let a child wear a seat belt across the neck or over the stomach. Do not put any accessories on a seat belt. Devices intended to improve occupant comfort or reposition the shoulder part of a seat belt, severely compromise the protective capability of the seat belt and increase the chance of serious injury in a crash. Two children should never use the same seat belt. If they do, they could be very seriously injured in a crash. This could result in serious neck and internal injuries during a crash. To determine if a lap/shoulder belt properly fits a child, have the child sit in the rear seat, all the way back against the seat and put on the seat belt. Follow the instructions on page 16 . Then check how the belt fits. If the shoulder part of the belt rests over the child's collarbone and against the center of the chest, and the lap belt rests over the child's hipbones and touches the tops of Do not let a child put the shoulder part of a seat belt behind the back or under the arm. This could cause very serious injuries during a crash. It also increases the chance that the child will slide under the belt in a crash and be injured. 38 Driver and Passenger Safety