SEMA members manufacture, distribute and retail parts and accessories for use on passenger cars, trucks, recreational and special-interest collector vehicles of all kinds. These products include performance, functional, restoration and styling-enhancement equipment of various designs and performance specifications. However, many of these parts are required to meet a variety of state and federal laws and regulations. Complying with these requirements is no easy task, but it can be made easier with a simple understanding of which parts are regulated, who regulates them and how manufacturers can innovate new products for automobiles within the bounds of the law. The following summarizes regulatory oversight basics.