On Wed, 24 Oct 2007 01:01:29 +0100, Ian Jelf
wrote:

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?!

Yerkes' Second Law: Trains will only be held to regulate the service
at non-interchange stations.