(a) No person shall drive upon, along or across a street or highway, or any part thereof, which has been closed in the process of its construction, reconstruction or repair, and posted with appropriate signs by the authority having jurisdiction to close such street or highway.
(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 4511.71)