Caption: When is a trackless trolley not a trackless trolley? When it's a diesel bus in disguise. 0291 is one of three RTS buses equipped with dummy trolley poles after they were retired to scrape ice off the TT wires. 0291 and 0267 were converted to ice scrapers in 2008, and 0215 was converted in 2007. (March 2, 2011)
