Installing a bike trail along side an active RR of any kind is a very POOR idea. The FRA has developed strict regulations on how the two must be separated and how far apart (by what are essentially extremely tall and ugly looking fences).

Many bicycle riders are their own worst enemy because they assume they have the right of way at all times and more often than not fail to obey stop signs and red lights. They are totally out to lunch in this respect because the traffic laws which apply to automobiles also apply to them. "Share the road" means precisely what it says: autos must share with bicyclists, and bicyclists must share with autos. Occasionally they are dead wrong.

There was an item on the news yesterday on how the SFPD is starting to go after bicyclists who are stop sign an red light runners. It's long overdue. I'm not anti-bicycle; I ride mine myself and have for years. I am, however, anti-selfish and anti-stupid.