(a) A railway company shall place at each place where its railroad crosses a first or second class public road a sign with large and distinct letters giving notice that the railroad is near and warning persons to watch for railroad cars. The sign must be high enough above the road to permit the free passage of vehicles.
(b) A railway company that does not erect a sign required by Subsection (a) is liable for a resulting injury to a person or resulting damage to property.