I see, so Route 91 is a footnote on the 90:
Quote:
Route 91 - To and from City Centre and Heuston Station only. This service operates in conjuction with train arrivals and departures from Heuston Station.
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i.e. we make it up as we go along if the bus driver that feels like driving a 91 is rostered on for that day.
meanwhile, put "91" into "search by route number" and you get
http://www.dublinbus.ie/your_journey...r.asp?route=91