You're right. I was just having a discussion about this with the conductor of my commuter train. They're going to reduce the speeds of the trains to 10 MPH just in case a pedestrian slips on the tracks.

You see where this is going, I hope. It's possible for a cyclist (or motorist, locomotive driver) to be riding responsibly and have something suddenly appear. You're raising the bar pretty high to make the cyclist (motorist, locomotive driver) responsible for people "doing something stupid". *All* road users have a share in the responsibility for public safety.

But I see others have made the same point. We'll have to agree to disagree on this. I'll do everything reasonable in my power to avoid an accident, but I'm not going to walk my bike.
Steve