This Terminology is a compendium of motor vehicle safety and environmental engineering words and phrases, and their definitions. They have been extracted verbatim from SAE Standards, Recommended Practices, and Information Reports, published in the 1994 SAE Handbook. An Appendix contains a listing, in J-number sequence, of the reports from which the terms were extracted. The terms are reported as they were developed and reported by SAE technical committees concerned with passenger cars, trucks, and certain recreational vehicles, and their related components, systems, operation, and maintenance.