BUR #25553 is pending approval.
deprecate signal
I consider this tag to be ambiguous and this has been used on different stuff, such as:
- post #1059322 - should've been sound wave instead,
- post #2126052 - railroad signal,
- post #4884702 - I see nothing like a signal there. But some kind of device that scans transit fare card. We already have card reader
Updated