I remember one occasion at Waterloo station in London in the early 70s. There we all were on platform 13, peaceably waiting for the Dorking train. One minute before it was due to leave, it still hadn't arrived at the platform. Then came the tannoy announcement, "The train due to leave from platform 13 at xxxx hours is just about to leave from platform 14".

Stampede! (We all made it)