§ 73.02 DEFINITIONS.
   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   ALL TERRAIN VEHICLES. ATV motor driven two, three and four wheel vehicles which are unregistered and are not designed for street usage.
   HIGHWAY. A way or place of whatever nature, publicly maintained and open to the use of the public for the purposes of vehicular travel. HIGHWAY includes street.
   MOTOR DRIVEN CYCLE. Any motorcycle, including every motor scooter, with a motor which produces not to exceed five horsepower and every bicycle with motor attached.
   MOTORCYCLE. Any motor vehicle other than a tractor having a seat or saddle for the use of the rider and designed to travel on not more than three wheels in contact with the ground and weighing less than 1,500 pounds.
   UNIMPROVED PRIVATE PROPERTY. Any parcel of land which either contains no structures or which is not surfaced with cement, concrete, asphaltic concrete or other similar material or which does not have a hard surface made up of a mixture of rock, sand or gravel bound together with a chemical or mineral substance other than natural soil.
(`83 Code, § 12-302)