Sign me up

This entry looks at signs that have been retired. They instruction that they once carried has been removed, but they remain as a memory of a time when they had some authority. Now, no-one wants them. I guess it was justified that their removal would cost money, and so it was cheaper to leave them there.
 For other similar observations, click on the links below:

Sign of the times

Sign of madness

Sign on the dotted line

Sign language

Sign of intelligence

Sign of co-operation

Sign from above

Sign for sore eyes