Terms used in this chapter, sections 16-216 to 16-227, inclusive, and chapters 244, 244a, 244b, 245a and 245b shall be construed as follows, unless another meaning is expressed or is clearly apparent from the language or context:

(1) “Railroad company” includes every person owning, leasing, maintaining, operating, managing or controlling any railroad, or any cars or other equipment employed thereon or in connection therewith, for public or general use within this state;

(2) “Street railway company” includes every person owning, leasing, maintaining, operating, managing or controlling any street railway, or any cars or other equipment employed thereon or in connection therewith, for public or general use within this state;

(3) “Public service motor vehicle” includes all motor vehicles used for the transportation of passengers for hire; and

(4) “Motor bus” includes any public service motor vehicle operated in whole or in part upon any street or highway, by indiscriminately receiving or discharging passengers, or operated on a regular route or over any portion thereof, or operated between fixed termini, and any public service motor vehicle operated over highways within this state between points outside this state or between points within this state and points outside this state.