SBST would be happy to reuse that no 173..in fact SMRT should
renumbered their former SBS handover svc
61-661,67-667,75-675,77-677 etc
Renumbers:
61,67 -- 661,667
75,77 -- 675,677
106 -- 706
167,169 -- 767,769
171,172,173,176,177,178 -- 771,772,773,776,777,778
180,184,187,188(E/R),189,190 -- 780,784,787,788(E/R),789,790
And maybe:
300,302,307(E) -- 930,932,937(E)
Premium 761 -- Premium 562