Of course it makes the lights on the control panel look evenly spread
out.
However, you failed to explain the logic of holding a train *full* of
people.

They don't care. A trains a train to LU. If its packed to the gills and
no one
can get on they don't give a monkies. They'll still hold it back. As
you say,
as long as the lights on the panel look ok they're happy.

B2003