This fact sheet will provide an overview of federal regulation of interstate van and bus travel and when such regulation applies or does not apply to different classes of vehicles and situations. This memorandum only discusses passenger vehicles and not the transportation of property or hazardous materials. Included are references to statutes and regulations for easy reference. Also, it is important to note that the regulations do not always accurately reflect the laws and this will be mentioned wherever appropriate, as will topics on which information is lacking. This fact sheet includes general information and it is intended only as a starting point for legal consultation and research.