page_title: Autoroutes of Quebec
section_title: Numbering system
hierarchical_section_title: Autoroutes of Quebec / Numbering system
caption_attribution_description: English: Drivers along eastbound Quebec Autoroute 30 approach the exit for Autoroute 15. Français&#160;: Conducteurs sur la voie direction est de l'autoroute 30 à l'approche de la sortie pour l'autoroute 15.
context_page_description: The autoroute system is a network of freeways within the province of Quebec, Canada, operating under the same principle of controlled access as the Interstate Highway System in the United States and the 400-series highways in neighbouring Ontario. The Autoroutes are the backbone of Quebec's highway system, spanning almost 2,400 km. The speed limit on the Autoroutes is generally 100 km/h in rural areas and 70–90 km/h in urban areas; most roads are made of asphalt concrete.
  The word autoroute is a portmanteau of auto and route, equivalent to "motorway" in English, and has become the Quebec French equivalent of "expressway". In the 1950s, when the first Autoroutes were being planned, the design documents called them autostrades, from the Italian word autostrada.
context_section_description: Autoroutes are divided into three types – principal routes, deviation routes, and collector routes – and are laid out and numbered in a fashion similar to the Interstate Highway System in the United States. The principal Autoroutes are the major highways of the province, and have single- or double-digit numbers. East-west Autoroutes running parallel to the Saint Lawrence River (for example, Autoroute 20 and Autoroute 40) are assigned even numbers, while north-south Autoroutes running perpendicular to the Saint Lawrence (such as Autoroute 5 and Autoroute 15) are given odd numbers. Deviation and collector Autoroutes both feature triple-digit numbers. Deviation routes are bypasses intended for truck traffic to circumvent urban areas, and are identified by an even number prefixing the number of the nearby Autoroute that it bypasses (for example, Autoroute 440 in Laval). Collector Autoroutes, by contrast, are spur routes into urban areas, and are identified by an odd number prefixing the number of the nearby Autoroute that it branches off of (such as Autoroute 720, a spur of Autoroute 20 into downtown Montreal).
caption: Drivers along eastbound Autoroute 30 approach the exit for Autoroute 15.
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