In message . com, MIG
writes
The rule is that if I am approaching the platform, the train will
leave and I'll be stuck there waiting for the delayed one, but if I am
on the train, it will be held to regulate the service. There is
probably a name for this law.

I'll open with Yerkes' Law as a suggestion. Any others?!
--
Ian Jelf, MITG
Birmingham, UK

Registered Blue Badge Tourist Guide for London and the Heart of England
http://www.bluebadge.demon.co.uk