Wheels that slip

There's a hill on the GO tracks heading north from Agincourt. When the tracks are wet, the train wheels slip and the fastest we can move is about a slow walk. But did you know this problem is so well known that it has an official name "Slippery rail"? According to wikipedia, this is a condition of railroads caused by fallen moist leaves that lie on and cling to the top surface of the rails of railroad tracks. The condition results in significant loss of friction between train wheels and rails, and in extreme cases can render the track temporarily unusable. The situation is colloquially referred to as "leaves on the line" in Britain.

But there is something can be done to fix this. Trees can be cut back (non starter for me), sand released on the track (which GO already does), high pressure water hoses and even laser blasts.

How about we ask GO to spend some money on making changes to their locomotives ?