"Gross weight" means the weight of a vehicle plus the weight of any load thereon.
(ORC 4511.01(V))
“Highway maintenance vehicle” means a vehicle used in snow and ice removal or road surface maintenance, including a snow plow, traffic line striper, road sweeper, mowing machine, asphalt distributing vehicle, or other such vehicle designed for use in specific highway maintenance activities. (ORC 4511.01(QQQ))