In message , at 22:29:56 on
Tue, 25 Jan 2011, Basil Jet remarked:

I thought that buses running out of service were ordered to avoid their
service route where possible, because people waiting for buses get
annoyed if they see a bus with their chosen route number running out of
service.

A simpler solution is to replace the number with either "Not in Service"
or blank. Buses don't have the route number painted on them permanently!
--
Roland Perry