[haljackey]

A blurb from the US Federal Highway Administration about the 401:

The key high-volume highways in Ontario are the 400-series highways in the southern part of the province. The most important of these is the 401, the busiest highway in North America, with average annual daily traffic (AADT) of more than 425,000 vehicles in 2004, and daily traffic sometimes exceeding 500,000 vehicles. In much of the Toronto area, the 401 has six lanes in each direction, but some segments have seven, eight, and even nine lanes in each direction. The next most heavily trafficked freeways in the 400 system are the 427, with an AADT of about 312,000 vehicles, and the Queen Elizabeth Way, with an AADT of about 175,000 vehicles.

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