York Region Transit 001-014

York Region Transit 001-014 are Orion 05.501 buses built in 1999 and 2000. They were new as GO Transit 1150-1163, and were bought by YRT with the transfer of the Bayview and Yonge 'C' services in August 2003. They were renumbered into the standard YRT numbering, with a 0 for its year of make (2000). They are the only buses in the YRT fleet to be numbered with a 0 first, as YRT uses only the last digit for buses built after 1999.

These buses previously had "Moving York" slogan under the side advertisements. The slogans have since been removed.

When these vehicles were first introduced to YRT, they were mainly restricted to 91 Bayview and 99 Yonge 'C'. Today, 001-010 are normally found on 5 Clark, 7 Martin Grove, 12 Pine Valley, 13 Islington, 20/20A Jane, 21 Vellore Local, 23 Thornhill Woods, 26 Maple Local, 87 Autumn Hill, and school specials during weekdays. 011-014 are normally found on 14 14th Ave, 83/83A Trench, 86 Newkirk-Red Maple, Richmond Hill GO Shuttles, and school specials during weekday rush hours only.

Details
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 * colspan=2 align=center| York Region Transit active fleet