What is HOS personal conveyance?

According to the FMCSA, personal conveyance refers to the movement of CMVs for personal use while off duty. As long as the load isn’t being transported for the commercial benefit of the motor carrier, the CMV may be used for personal conveyance. 
Hours-of-service regulations regarding personal conveyance limitations can be established by motor carriers either within the scope of or more restrictive than those provided by the Federal Registrar.