(1) No vehicle unladen or with load shall exceed a height of fourteen feet, six inches, except:

(a) Combines or vehicles used in transporting combines, to be engaged in harvesting within or without the state, moving into or through the state during daylight hours when the overall height does not exceed fifteen feet, six inches;

(b) Livestock forage vehicles with or without load that comply with subsection (2) of section 60-6,305;

(c) Farm equipment or implements of husbandry being driven, picked up, or delivered during daylight hours by farm equipment dealers or their representatives as authorized under section 60-6,382 shall not exceed fifteen feet, six inches;

(d) Self-propelled specialized mobile equipment with a fixed load when the requirements of subdivision (2)(i) of section 60-6,288 are met;

(e) Vehicles which have been issued a permit pursuant to section 60-6,299; or

(f) Vehicles with a baled livestock forage load that comply with subsection (4) of section 60-6,305 when the overall height does not exceed fifteen feet, six inches.

(2) No person shall be required to raise, alter, construct, or reconstruct any underpass, bridge, wire, or other structure to permit the passage of any vehicle having a height, unladen or with load, in excess of twelve feet, six inches. The owners, lessees, and operators, jointly and severally, of vehicles exceeding twelve feet, six inches, in height shall assume the risk of loss to the vehicle or its load and shall be liable for any damages that result to overhead obstructions from operation of a vehicle exceeding twelve feet, six inches, in height.