I have 700x35 tires (fairly narrow) and can cross without a problem at about ~20 degrees - quite shallow. The best technique is to just give a quick flick to the side and hold the handlebars firmly when doing so - maintaining control.
The rubber boot around the rail doesn't really have any impact on making it any worse or better for cyclists - there's still quite a decent gap there (especially where there is a restraining rail). It is also not there for longevity of the rail - it is there for the longevity of the concrete (to prevent cracking), and for vibration absorption (from the Project Agreement).
The rubber boot around the rail doesn't really have any impact on making it any worse or better for cyclists - there's still quite a decent gap there (especially where there is a restraining rail). It is also not there for longevity of the rail - it is there for the longevity of the concrete (to prevent cracking), and for vibration absorption (from the Project Agreement).