text: Let's number the railway tracks 1, 2, 3, 4, 5, 6 going from top to bottom. Tracks 1, 2, 3, 4 actually go on straight forward from left to right, they don't collapse into each other as suggested by the map, whereas tracks 5 and 6 (the light gray ones) collapse into 3 and 4. See here for reference: 
  https://www.google.com/maps/@45.4826527,9.3117566,247m/data=!3m1!1e3