To the millions of visitors anticipated at Expo 67, the city of Montreal wanted to show itself as modern, dazzling and cosmopolitan. And a modern and dazzling city could not be dirty. Enter the "Men in Yellow".
Dressed in yellow suits, Montreal's litter-pickers assured that city streets were clear of paper, litter and other light refuse from the months of March to December. Armed with a pincer-stick, broom and shovel, the eagle-eyed men scoured the city's streets mounted on special carrier-tricycles.
The tricycles were acquired in 1962, and by 1964, Montreal's Roads Department counted 80 of them divided amongst 5 sectors: north, south, east, west and center. Scooter-mounted supervisors linked by radio to the complaints department ensured that any urgency was quickly dealt with...
images (1) centredepaix.org
(2-3) personal collection (Montreal '64 magazine)