In article ,
Roland Perry wrote:
No, walking up both sides would be the most efficient.

Efficent? What are you optimising for? Throughput, or minimum journey
time?

ISTR that standing gives better throughput because people tend to
be happy leaving a small gap to the person in front when they stand,
but I can't find the any trace of the research I half-remember on the
web.

No, they are always wrong.

Not always.


--
Mike Bristow