The City of Winnipeg's by-laws have a definition of "parade" that appears to describe the daily movement of traffic:
There's no definition of "procession" in the by-law, but my Oxford dictionary describes it as "moving forward in orderly succession.""parade" means any procession or body of pedestrians … numbering more than thirty (30) standing, marching, or walking anywhere on a street, or any group of vehicles … numbering ten (10) or more stopped or moving anywhere on a street.
1573/77 Traffic (Consolidated Version)
By-law Type: Regulatory
Date Passed: Apr 6, 1977