See also:

Normal occupant weight
The number of occupants the vehicle is designed to seat, multiplied by 68 kilograms (150 lbs). ...

Uniform Tire Quality Grading Standards
A uniform standard to grade the quality of tires with regards to tread quality, tire traction and temperature characteristics. Ratings are determined by tire manufacturers using U.S. government ...

Special seat belt retractor
All seat belts except the driver's seat belt are equipped with a special seat belt retractor. When activated, the special seat belt retractor ensures the seat belt will not slacken once the chi ...