Canada maintains 1,042,300 kilometres of public roads, of which 38,021 kilometres are classified as National Highway System routes. The Trans-Canada Highway extends 7,821 kilometres from Victoria, British Columbia to St. John's, Newfoundland and Labrador, making it one of the longest national highways in the world. This route was completed in 1962 and officially opened on September 3, 1962, though the Rogers Pass section through the Rocky Mountains did not open until 1962. The highway crosses all ten provinces but does not extend into the territories.
Provincial and territorial governments maintain jurisdiction over driver licensing. A valid driver's license from any Canadian province or territory is recognized throughout the country. International visitors may drive using a valid foreign license for the first 60 to 90 days depending on the province, after which an International Driving Permit may be required. Quebec requires an IDP for all non-Canadian licenses after the first six months. Speed limits are posted in kilometres per hour. Provincial speed limits on major highways range from 80 to 110 kilometres per hour in southern regions, with most rural highways in Ontario, Quebec, and the Maritime provinces set at 100 kilometres per hour and many Western Canadian highways at 110 kilometres per hour. School zones typically reduce limits to 30 to 40 kilometres per hour during posted hours.
Winter driving presents substantial challenges from October through April in most of the country. Transport Canada requires winter tires or chains on many mountain highways in British Columbia between October 1 and March 31. Quebec mandates winter tires on all passenger vehicles from December 1 to March 15, enacted under provincial law in 2008. Winter tires must display the three-peaked mountain and snowflake symbol indicating they meet specific snow traction performance requirements. Studded tires are permitted in most provinces from October to April, though banned year-round in southern Ontario.
Road closures occur frequently during winter storms. The Coquihalla Highway between Hope and Kamloops in British Columbia closes multiple times each winter due to avalanche risk and whiteout conditions. Highway 17 along Lake Superior in Ontario closes several times annually due to lake-effect snow squalls that can reduce visibility to zero within minutes. The Cabot Trail in Cape Breton Highlands National Park becomes impassable during winter storms despite remaining technically open year-round.
Black ice forms when temperatures hover near freezing, creating invisible ice layers on pavement. This condition is most common in early morning and late evening during shoulder seasons. Freezing rain warnings trigger highway closures in Ontario and Quebec several times each winter. The Ice Storm of January 1998 closed major sections of Highway 401 and Highway 20 for multiple days, demonstrating the severity of freezing precipitation events.
The Rocky Mountain highway network includes several routes requiring specific driving techniques. The Trans-Canada Highway through Kicking Horse Pass reaches an elevation of 1,643 metres, with grades exceeding eight percent on the descent into Field, British Columbia. Runaway truck lanes appear every few kilometres on steep descents. The Big Hill section between Field and the Alberta border drops 300 metres over 6.5 kilometres.
Highway 93 through Kootenay and Banff National Parks includes the 230-kilometre stretch between Radium Hot Springs and the junction with Highway 1 near Castle Junction. This route crosses Vermilion Pass at 1,651 metres elevation. Weather conditions can change within minutes at these elevations, with summer snowstorms possible even in July and August. The Icefields Parkway extends 232 kilometres from Lake Louise to Jasper, reaching 2,088 metres elevation at Sunwapta Pass. This highway closes sections frequently during winter due to avalanche risk. Parks Canada implements vehicle size restrictions, prohibiting vehicles over 11.5 metres in length on certain sections.
The Sea-to-Sky Highway 99 between Vancouver and Whistler covers 123 kilometres with numerous switchbacks and grades. This route was substantially improved for the 2010 Winter Olympics but remains subject to rockslides and winter closures. The section between Squamish and Whistler includes several avalanche zones where concrete snowsheds protect the roadway. Highway 3 through the southern British Columbia interior, known as the Crowsnest Highway, crosses four mountain passes over its 841-kilometre length from Hope to Medicine Hat, Alberta. Kootenay Pass at 1,774 metres is the highest paved pass in Canada and accumulates over 10 metres of snow annually.
The Alaska Highway extends 2,232 kilometres from Dawson Creek, British Columbia to Delta Junction, Alaska, with 1,187 kilometres in Canadian territory. Construction began in March 1942 as a military supply route and the road opened to military traffic on November 20, 1942, built in just eight months under emergency wartime conditions. The highway was not fully paved until 1992. Services remain limited, with some segments having no fuel stations for 150 kilometres. The roadway sits on permafrost in northern sections, causing frost heaves that create sudden dips and rises in the pavement. These irregularities damage vehicles traveling at highway speeds.
The Dempster Highway runs 736 kilometres from the junction with Klondike Highway near Dawson City, Yukon to Inuvik, Northwest Territories. This is the only public road in Canada crossing the Arctic Circle, which occurs at kilometre 403. The highway is unpaved gravel for its entire length. Two ferry crossings are required in summer—the Peel River and the Mackenzie River—with ice bridge crossings during deep winter. During spring breakup and fall freeze-up, typically in May and October, the highway is completely impassable for two to three weeks at each crossing. No cell phone service exists for the highway's entire length. The gradient of the road crosses Richardson Mountains at 1,067 metres elevation.
The Dalton Highway in Alaska provides the only land route to the Arctic Ocean from the road network, but no equivalent exists on the Canadian side. The northern terminus of permanent roads in Canada is Tuktoyaktuk, Northwest Territories, reached via the Inuvik-Tuktoyaktuk Highway, which opened on November 15, 2017. This 137-kilometre all-weather road is built on permafrost and includes 359 culverts to maintain drainage and prevent thawing. Prior to this highway, Tuktoyaktuk was accessible only by air or by winter ice road.
The Trans-Labrador Highway system has been extended in stages. Route 500 from Labrador City to Happy Valley-Goose Bay was completed in 1992. The section from Happy Valley-Goose Bay to Cartwright opened in 2002. The extension to Red Bay on the Strait of Belle Isle opened in 2009. The final section connecting Red Bay to Blanc-Sablon, Quebec at the Labrador border opened on December 10, 2009, completing the connection. Large portions remain unpaved. Services are concentrated in the handful of communities along the route, with some gaps exceeding 100 kilometres between fuel stations.
The Prairie provinces contain extensive stretches of straight, flat highways. Highway 1 across Saskatchewan runs 655 kilometres from the Manitoba border to the Alberta border with sections of perfectly straight road exceeding 50 kilometres. Highway 16, the Yellowhead Highway, extends across the three Prairie provinces for over 1,000 kilometres. These conditions create driver fatigue and inattention. Saskatchewan records some of Canada's highest rates of highway fatalities per capita, with 110 deaths in 2019 for a population of 1.17 million.
Wildlife collisions are frequent on Prairie highways. Deer, moose, and elk cross highways primarily at dawn and dusk. A collision with a moose at highway speed is often fatal to vehicle occupants because the animal's body mass is at windshield height. Manitoba Public Insurance recorded 3,462 wildlife collision claims in 2018. The peak months are October and November during breeding season and spring migration.
The Canadian Shield presents different challenges. Highway 17 along the north shore of Lake Superior between Sault Ste. Marie and Thunder Bay covers 712 kilometres through rock cuts and around lake inlets. This section has limited services, with some gaps of 80 kilometres between communities. The highway is two lanes wide with no shoulders in many sections where rock cuts come to the pavement edge. Fog from Lake Superior can reduce visibility to a few metres without warning.
Highway 11 running north from North Bay, Ontario to Hearst and beyond passes through continuous boreal forest with minimal development. Wildlife including moose and black bears are common. Northern Ontario highways often show significant frost damage each spring, with potholes and pavement edge deterioration. Provincial maintenance standards require repair within specific timelines, but rough sections are common during spring thaw.
The Cabot Trail forms a 298-kilometre loop around the northern tip of Cape Breton Island in Nova Scotia. The route passes through Cape Breton Highlands National Park and includes sections with grades reaching 10 percent and curves with minimal guardrails on cliff edges. The trail offers ocean views from elevations exceeding 400 metres. Some sections are narrow, making it difficult for two large vehicles to pass. The trail is named after John Cabot, who likely made landfall in this area in 1497, though the exact location remains disputed.
Vancouver Island is accessed by BC Ferries from Tsawwassen to Swartz Bay or Horseshoe Bay to Departure Bay. The Island Highway, comprising Highway 1 and Highway 19, runs 391 kilometres from Victoria to Port Hardy. The northern sections beyond Campbell River narrow to two lanes through mountainous terrain. Highway 4 crosses the island from Parksville to Tofino and Ucluelet on the Pacific coast, covering 166 kilometres with mountain passes and old-growth forest sections. The road is two lanes wide with minimal shoulders and becomes congested during summer months.
Newfoundland's highway network is limited. The Trans-Canada Highway enters the province via ferry from North Sydney, Nova Scotia to Port aux Basques, then runs 905 kilometres to St. John's. Route 430 extends up the Great Northern Peninsula to St. Anthony and L'Anse aux Meadows, the Viking settlement site. This 443-kilometre route passes through Gros Morne National Park. Caribou frequently cross highways in Newfoundland, with over 700 reported collisions annually. Evening and nighttime driving significantly increases collision risk.
Toronto's Highway 401 carries an average of 500,000 vehicles daily on its busiest sections, making it one of the widest and busiest highways in North America. The collector-express system separates through traffic from local traffic, but congestion occurs throughout the day. The section through Toronto widens to 18 lanes at some points when collector and express lanes are counted together. Collisions and breakdowns cause delays multiple times daily.
Montreal's highway system includes several major routes. Highway 40, the Metropolitan Expressway, runs east-west through the city. Highway 15 and Highway 13 provide north-south routes. The Turcot Interchange, where Highways 15, 20, and 720 meet, was rebuilt between 2015 and 2020 due to structural deterioration of the original 1967 structure. Montreal's highways show significant winter deterioration due to freeze-thaw cycles and road salt use. Pothole repair occurs continuously from April through June.
Vancouver has limited highway capacity. Highway 1 narrows to four lanes through the city and regularly experiences severe congestion. The Port Mann Bridge crossing opened in 2012 as a ten-lane structure replacing the five-lane original bridge. Tolls were removed in September 2017 after being collected for five years. The Massey Tunnel under the Fraser River, opened in 1959, creates a bottleneck with only four lanes and a clearance of 4.15 metres. Commercial trucks over this height must use the Alex Fraser Bridge or Port Mann Bridge, adding significant distance to their routes.
All provinces require vehicle registration and liability insurance. Minimum insurance requirements vary by province. British Columbia requires $200,000 minimum third-party liability coverage. Ontario requires $200,000 minimum. Quebec requires $50,000 minimum. Most providers recommend $1,000,000 or higher coverage. Insurance rates vary significantly by province and driver history. British Columbia operates a public auto insurance system through the Insurance Corporation of British Columbia. Saskatchewan and Manitoba also have public systems. Other provinces have private insurance markets.
Winter tire requirements exist in specific locations. British Columbia requires winter tires or chains on mountain highways from October 1 to March 31 under the Motor Vehicle Act Regulation. Quebec requires winter tires on all registered vehicles from December 1 to March 15 under Section 10 of the Highway Safety Code. No other provinces mandate winter tires, though they are strongly recommended throughout the country.
Emergency equipment recommendations include a spare tire, jack, and tire iron, though many new vehicles now include tire repair kits instead of spare tires. A first aid kit, flashlight, blankets, non-perishable food, and water are essential for remote driving. Winter driving requires additional supplies including an ice scraper, snow brush, booster cables, sand or kitty litter for traction, and a small shovel. A full fuel tank is critical in remote areas during winter, as running the engine for heat may be necessary if stranded.
BC Ferries operates 25 routes connecting coastal communities and islands. The main routes include Tsawwassen to Swartz Bay, 38 kilometres, with crossing time of 95 minutes. Horseshoe Bay to Departure Bay is 35 kilometres with 100-minute crossing. Reservations are required on major routes during summer and are recommended year-round. Vehicle fares vary by vehicle length and season. Walk-on passenger service is available on all routes.
Marine Atlantic operates ferry service between North Sydney, Nova Scotia and Port aux Basques, Newfoundland, a distance of 177 kilometres with crossing time of six to eight hours depending on vessel and weather. Summer service includes a route from North Sydney to Argentia, Newfoundland, 480 kilometres with crossing time of 14 to 16 hours. Reservations are required. Vehicle fares are based on vehicle length. Cabins are available for overnight crossings.
The Northumberland Ferries Limited operates between Caribou, Nova Scotia and Wood Islands, Prince Edward Island from May through December. This 22-kilometre crossing takes 75 minutes. Service operates multiple times daily in summer. The Confederation Bridge provides an alternative year-round connection between Cape Jourimain, New Brunswick and Borden-Carleton, Prince Edward Island. This 12.9-kilometre bridge opened on May 31, 1997, replacing the ferry service. The bridge is 60 metres above water at its highest point to allow ship passage. Tolls are collected when leaving Prince Edward Island. The toll as of 2024 is $50.25 for a standard two-axle vehicle.
Several smaller ferry services operate throughout the country. A free ferry crosses the St. Lawrence River between Lévis and Quebec City. Free cable ferries operate at several river crossings in British Columbia and Alberta. The Mackenzie River and Peel River ferries on the Dempster Highway operate from approximately June to October, with ice bridge crossings from December to April. During breakup and freeze-up periods in May and November, no crossing is possible.
Fuel prices vary significantly by province due to different provincial tax rates. Gasoline in Vancouver consistently ranks among the most expensive in North America, often exceeding $2.00 per litre, while prices in Alberta typically run $0.30 to $0.40 per litre lower due to provincial fuel tax differences. Quebec and the Atlantic provinces fall between these extremes. Fuel prices in remote areas add significant premiums due to transportation costs. Fuel in northern communities can cost double the southern Canadian average.
The Trans-Canada Highway and major provincial highways have fuel stations every 50 to 100 kilometres in populated regions. Remote highways require careful fuel planning. The Alaska Highway has stations approximately every 100 kilometres, though some gaps exceed 150 kilometres. The Dempster Highway has fuel only at the start point near Dawson City, at Eagle Plains at kilometre 369, and at the end in Inuvik. The Trans-Labrador Highway has fewer stations, with gaps sometimes exceeding 150 kilometres.
Electric vehicle charging infrastructure is concentrated in southern populated areas. Quebec operates the Electric Circuit network with over 3,000 charging stations as of 2024. British Columbia has extensive charging along major highways through its public and private networks. The Trans-Canada Highway has charging stations in most communities in British Columbia, Alberta, Ontario, Quebec, and the Maritime provinces, though gaps remain. Northern and remote areas have minimal electric vehicle charging infrastructure. The Alaska Highway and Dempster Highway have essentially no public charging stations.
Diesel fuel is widely available on major routes and is the fuel of choice for long-distance travel due to better fuel economy and cold weather performance. Most stations in Canada offer both gasoline and diesel. Diesel fuel quality includes winter formulations that remain fluid at lower temperatures. Summer diesel can gel in cold weather, causing fuel system failures.
Speed limits are enforced through a combination of police patrol and automated speed cameras in some provinces. British Columbia uses photo radar on some highways. Ontario removed photo radar in 1995 but uses red light cameras at urban intersections. Quebec uses photo radar and red light cameras extensively. Fines for speeding vary by province and the amount over the posted limit. Ontario implements escalating fines with penalties starting at $2.50 per kilometre over the limit for speeds 1 to 19 kilometres above the posted limit, increasing to $9.75 per kilometre over for speeds 50 or more kilometres over the limit.