The manufacturer's instructions that come with thebooster seat, state the weight and height limitations forthat booster. Use a booster seat with a lap-shoulder beltuntil the child passes the below fit test:. Sit all the way back on the seat. Do the kneesbend at the seat edge? If yes, continue. If no,return to the booster seat.. Buckle the lap-shoulder belt. Does the shoulderbelt rest on the shoulder? If yes, continue. If no, tryusing the rear safety belt comfort guide. See “RearSafety Belt Comfort Guides” under Lap-ShoulderBelt on page 2‑26 for more information. If theshoulder belt still does not rest on the shoulder,then return to the booster seat.. Does the lap belt fit low and snug on the hips,touching the thighs? If yes, continue. If no, returnto the booster seat.. Can proper safety belt fit be maintained for lengthof trip? If yes, continue. If no, return to thebooster seat.If you have the choice, a child should sit in a positionwith a lap-shoulder belt and get the additional restrainta shoulder belt can provide.Q: What is the proper way to wear safety belts?A: An older child should wear a lap-shoulder belt andget the additional restraint a shoulder belt canprovide. The shoulder belt should not cross the faceor neck. The lap belt should fit snugly below thehips, just touching the top of the thighs. This appliesbelt force to the child's pelvic bones in a crash.It should never be worn over the abdomen, whichcould cause severe or even fatal internal injuriesin a crash.Also see “Rear Safety Belt Comfort Guides” underLap-Shoulder Belt on page 2‑26.According to accident statistics, children and infantsare safer when properly restrained in the rear seatingpositions than in the front seating positions.In a crash, children who are not buckled up can strikeother people who are buckled up, or can be thrown outof the vehicle. Older children need to use safety beltsproperly.2-34