Support for lumbar and thigh regions of the body,
Lumbaristheregionofthespinethatliesbetweenthediaphragmandthepelvisregion.Itisan
importantpartasitbearsmostoftheweightofthebody,itisflexibleinnature.Carseatshave
adjustable lumbarcushions, the adjustable lumbarmechanisms in the seatsallow oneto
changetheshapeofthebackseatandhenceonecanfindthepositionthatismostcomfortable
for him. Also, the seats are kept long enough to supportthe thighs.
Safety rules regarding car seats,
AccordingtotheNationalTrafficandMotorVehicleSafetyActthatwasenactedbytheUSin
1966 setseveralstandardsforthebuildingandstrengthofthecarseats.Therequirementofthe
proper construction of the car seat assemblies is included in it. It also had some legal
requirementsthatareto befollowedbythecardriverandthepassengers.Oneisthatthe
personsittinginthefrontbesidethedriverhastominimum 5 feetinheightandshouldweighat
least 80 lbs.Also,experimentsconductedbyexpertshaveshownthatthedriversfaceddifficulty