In article , wrote:
OK, "the next bus 13 will be here in (an estimated) 8 minutes"
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this isn't what I wanted to know? Or isn't this what the
displays are telling me?

No, John's point, AIUI is that the display is telling you that a
12 will be here in one minute, a 33 in 3 minutes, and another 12
in 8 minutes, leaving you with no clue as to when the next 13 is.

--
Tony Bryer