I think you misunderstood the question. In all the rail cities I've been in, the distance/duration equation does not change based on when you leave. Travel ti

I think you misunderstood the question. In all the rail cities I've been in, the distance/duration equation does not change based on when you leave. Travel time is effectively constant. This article was about what constitutes rush hour and how it mutates travel time. For rail, it looks like the answer is "there isn't really a rush hour and it doesn't change things". Or does it? I've certainly had to pass on an overpacked train on the London Underground and on SF Bart. Also in Barcelona the path to leave some stations can be circuitous and get congested at times. I haven't been to Tokyo yet but I've heard stories...