See also:

Safety notes
WARNING   Work improperly carried out on electronic components and associated software could cause them to cease functioning. Because the vehicle's electronic components are interconnec ...

DOT (Department of Transportation)
DOT marked tires fulfill the requirements of the United States Department of Transportation. ...

Vehicle identification plate
Even if you have calculated the total load carefully, you should still make sure that the gross vehicle weight rating and the gross axle weight rating are not exceeded. Details can be found on ...