 Also, the Kingston Rd Tripper became known simply as the "Kingston Rd" (today's 503 Kingston Rd).Beginning October 11, 2016, the 502 Downtowner route had been operated by buses due to a shortage of streetcars resulting from the late delivery of the new Bombardier Flexity Outlook streetcars.Effective June 25, 2018, the route reverted to streetcar operation.