"Black ice" on railway

Dear passengers! 

Please note! 
One of the most common reasons for train delays in the autumn is the autumn leaves on the rails, which reduces the adhesion between the train wheelsets and rails! 

Always be vigilant and carefully near the railway! 
Also the train braking distance lengthens because of the autumn leaves! 

Train drivers says that autumn leaves on the rails and the resulting problems are the same like "black ice" on the asphalt!