(27 Jun 2023, 1:47 pm)cbma06 wrote A prefix character like a S for Secured or a N for Nexus etc… should be put in front of the service number, Along with the evening bus services that are secured, with the daytime service commercially ran by private commercial bus company.
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I'd argue it's the most cost effective way of doing it.
Whether passengers would understand the S71 or N71 is the same as the 71 and goes the same route as the 71, is another matter like.