sentences:  Since the retirement of the last lift-equipped Orion Vs on December 4, 2015, all 170 bus routes have been 100% accessible, using low-floor buses (Nova Bus LF Series and Orion VII).Not all stops along an accessible route are accessible (in particular, many subway stations where buses terminate are not accessible).The TTC's low-floor buses are identified by blue lights located on both sides of the front route display.