While transporting explosives (Class 1) or certain other hazardous materials, what restriction commonly applies to the vehicle?

Transporting explosives and certain other hazmat involves special restrictions: ATTENDING the vehicle (a qualified person must monitor it; it generally can't be left unattended); ROUTE restrictions (avoiding tunnels, certain bridges, and densely populated areas where required by regulation or local rules); NO SMOKING within a set distance of the vehicle; parking restrictions; secure parking requirements. CDL hazmat. These rules minimize the risk to the public from a hazmat incident. Drivers must know and follow applicable route, parking, attendance, and handling restrictions for the materials they carry. Knowing these common restrictions (attendance, routes, no smoking) for high-hazard materials is commonly tested.