By the Ottawa Citizen, June 22, 2017
Starting Sunday, OC Transpo passengers in the south and east areas of the city may be doing double-takes as several routes adopt new numbers in preparation for next year’s opening of the O-Train Confederation line.
In all, 15 routes will be renumbered.The busiest route is No. 1, which will be renamed the No. 6. Others changing are: Rte 41 becomes No. 291; routes 121, 123, 124, 126, and 128 become routes 42, 23, 24, 26, and 28 respectively; lines 144, 146, 147, 148, and 149 will become routes 93, 92, 197, 48, and 49 respectively, and the 192, 193, and 194 lines will be renumbered as Local Routes 47, 31, and 21 respectively.
http://ottawacitizen.com/news/local-news/oc-transpo-announces-new-route-ids-end-of-paper-passes