Don't mess with snow plow echelons on Highway 401

On Highway 401, snow plows often work in tandem, forming an echelon or "conga line". Passing or waving between these plows is dangerous.

[Video: Discovery Channel/Youtube. Come hell or horrible drivers, a team of snow plow drivers must keep the busiest highway in North America open.]

For more information about Winter Maintenance on Highway 401, visit Ontario.ca.