As used in this chapter, the following terms shall have the meanings indicated:
Any vehicle used or intended to be used as a conveyance upon the public streets or highways and duly licensed as such, and including self-propelled and non-self-propelled vehicles so designed, constructed and reconstructed or added to by means of accessories in such a manner as to permit the occupancy thereof as a dwelling or sleeping place for one or more persons and having no foundation other than wheels, jacks or blocks. The definition of trailer shall also include noncommercial unpowered vehicles designed to be towed by other vehicles and used to carry and transport other items.