Highway Safety on the Trans-Canada

The Biggest Risks Are Predictable

The Trans-Canada Highway stretches 7,821 km from St. John's, Newfoundland to Victoria, British Columbia. Most of it is safe, well-maintained highway. But certain sections carry specific risks that catch unprepared drivers off guard — particularly in Northern Ontario, on the prairies, and through BC's mountain passes. The good news is that nearly every serious incident on the Trans-Canada falls into a handful of predictable categories, and all of them are manageable if you know what to expect.

Moose Collisions: Ontario's Biggest Highway Threat

Ontario reports approximately 14,000 wildlife-vehicle collisions involving large animals every year, accounting for roughly 10% of all vehicle accidents in the province. One out of every 21 collisions on Ontario highways involves a wild animal. Moose are the most dangerous because of their body structure: an adult moose weighs up to 500 kg, and its long legs place the bulk of that mass at windshield height. When a vehicle strikes a moose, the bumper hits the thin legs while the full body weight crashes through the windshield and roof.

The highest-risk months are June, July, and August, with peak activity between dusk and dawn. Highway 17 between Sault Ste. Marie and Thunder Bay is the worst stretch. The moose are drawn to road salt residue on the pavement and to the aquatic vegetation in ditches alongside the highway.

How to Reduce Your Risk

• Drive during daylight hours. This is the single most effective thing you can do. Moose are most active between dusk and dawn, and their dark colouring makes them nearly invisible at night.
• Watch for the eye shine. At night, use high beams when there's no oncoming traffic. Moose eyes reflect light, and that flash of eye shine may be your only warning.
• Scan the ditches, not just the road. Moose often stand in or near the ditch before stepping onto the pavement. A dark shape at the road's edge is worth slowing down for.
• If a moose is on the road, stop and wait. Do not try to swerve around it. Moose are unpredictable and may bolt in any direction. Swerving into oncoming traffic or the ditch is often more dangerous than a controlled braking.
• Reduce speed in posted moose zones. The yellow moose-crossing signs are placed in documented high-collision areas. Take them seriously.

Driver Fatigue: The Silent Killer

The Trans-Canada has some of the longest uninterrupted stretches of highway in the world. The prairies between Winnipeg and Calgary are a notorious fatigue zone — hundreds of kilometres of flat, straight road with minimal visual stimulation. Northern Ontario is equally punishing: 700 km of two-lane highway through boreal forest between Sault Ste. Marie and Thunder Bay with limited services and repetitive scenery.

Fatigue-related accidents spike in the late afternoon and between midnight and 6 AM. The most dangerous driver is someone who has been behind the wheel for more than 4 hours without a real break. Coffee helps temporarily, but it is not a substitute for sleep.

Fatigue Warning Signs

• Drifting between lanes or hitting the rumble strip
• Missing turns or exits you meant to take
• Difficulty remembering the last few kilometres
• Frequent yawning or heavy eyelids
• Tailgating without realizing it

Single-Lane Sections and Passing

Large sections of the Trans-Canada in Ontario, Manitoba, and the Maritimes are undivided two-lane highway. This means you share the road with oncoming transport trucks, and passing opportunities are limited to designated passing lanes that appear every 15-30 km.

The most common fatal collision type on these sections is a head-on crash during an attempted pass. If you get stuck behind a slow-moving vehicle, wait for a passing lane. They are clearly signed in advance. Attempting to pass on a two-lane section with limited visibility — particularly on the rolling hills of the Canadian Shield — is one of the most dangerous things you can do on the Trans-Canada.

BC Mountain Safety

The Trans-Canada through British Columbia includes Rogers Pass (1,330 m elevation) in Glacier National Park and Kicking Horse Pass (1,627 m) at the BC-Alberta border. These are serious mountain highways with steep grades up to 8%, sharp switchbacks, and weather that can change in minutes.

Rogers Pass receives an average of 14 metres of snowfall annually at treeline. Over a 40 km stretch of highway, there are 135 avalanche paths. Parks Canada operates an avalanche control program and will close the highway for artillery control work, sometimes for hours at a time during winter storms.

Mountain Driving Rules

• Check DriveBC before departing. Road conditions, closures, and chain requirements are updated in real time at drivebc.ca.
• Winter tires are mandatory on most BC highways from October 1 to April 30. The M+S or mountain snowflake symbol is required.
• Use low gear on descents. Riding your brakes on a long mountain downgrade leads to brake fade. Shift to a lower gear and let the engine do the braking.
• Carry chains. Even with winter tires, chains may be required on certain passes during heavy snowfall. Have them and know how to install them before you need them.
• Watch for runaway truck ramps. These are gravel escape ramps on steep downgrades. If your brakes fail, use them — that's what they're for.

General Safety Checklist

• Keep your headlights on at all times, even during the day
• Pull completely off the highway if you need to stop — not just onto the shoulder
• Carry a roadside emergency kit (see our What to Pack guide)
• Tell someone your route and expected arrival time
• Keep your fuel tank above half — especially in Northern Ontario and rural Manitoba
• Check tire pressure and spare tire condition before long stretches
• Slow down in construction zones — fines are doubled in most provinces