very popular amongst both locals and tourists. TransLink, the transit authority of Metro Vancouver, British Columbia, tested 2 Enviro500 buses on lines 301, 311, 351, 354, 555, 601 and 620 between November 2017 and March 2018. It was announced soon after that 32 double-deckers will be purchased, arriving in 2019. On 30 October 2019, TransLink's first double-decker bus made its first ever run along route 620 from the Bridgeport station in Richmond to the Tsawwassen Ferry Terminal. From March 2009 to June 2012, three imported Alexander Dennis Enviro500 double-decker buses similar to those in Victoria were used on OC Transpo express routes on the Transitway in Ottawa, Ontario. Delivered in November 2008, these buses proved to be efficient in reducing costs, but their height prohibited their use on many routes. Consequently, these three buses were withdrawn and sold to Victoria in late 2012 after a new series of 75 Enviro500 buses with a lower height that met MTO regulations entered service earlier that year. As of 2018 OC Transpo has 133 of these buses. GO Transit, a regional transit system serving the Greater Toronto Area in Ontario is the largest user of double-decker buses in Canada, with over 150 such vehicles in service as of 2017. Its fleet comprises Alexander Dennis Enviro500s in a single-door, commuter-type configuration similar to its fleet of highway coaches. The first 22 entered service between 2008 and 2009, with its roof height limiting usage to the Highway 407 corridor. 105 additional buses were delivered between 2012 and 2015 and feature a lower roof height of . The latest series of 253 buses, which is currently built in a local factory in Vaughan, has a roof height of and is expected to replace most of the single-decker coach fleet by 2020, at which point 75% of the active fleet is expected to be composed of double-deckers. Strathcona County Transit of Strathcona County, Alberta started a pilot project in September 2010 which explored using different high-capacity bus types to carry more passengers on high-demand commuter routes between Strathcona County and Edmonton. This involved a one-year lease of an Alexander Dennis Enviro500 from the manufacturer. After completing a year of testing between September 2010 and October 2011, a firm order of 14 Enviro500s was placed in 2013 for their service between Sherwood Park and downtown Edmonton, with the first arriving in late August. Five more buses were ordered