Every railway company operating in this Commonwealth shall be required to clear from its right-of-way trees and brush for 100′ on each side of public road crossings at grade when such trees or brush would otherwise obstruct the view of approaching trains.

Every railway company violating the provisions of this section shall be fined not more than $500 for each offense, to be imposed by the State Corporation Commission after due notice and hearing upon the company or the employee so offending.