(a)   No person shall operate a motor vehicle, snowmobile, or all-purpose vehicle upon any path set aside for the exclusive use of bicycles, when an appropriate sign giving notice of such use is posted on the path.
   Nothing in this section shall be construed to affect any rule of the Ohio Director of Natural Resources governing the operation of motor vehicles, snowmobiles, all-purpose vehicles, and bicycles on lands under his jurisdiction. 

   (b)   If the offender commits the offense while distracted and the distracting activity is a contributing factor to the commission of the offense, the offender is subject to the additional fine established under Section 303.991 of the Traffic Code.  (ORC 4511.713)