Surviving Winter Driving on BC’s Most Dangerous Highway

Winter driving on the Coquihalla Highway is no small feat. This critical 200-kilometre stretch in southern British Columbia is known as one of North America’s most treacherous routes during the winter months. Connecting major communities and economic hubs, the Coquihalla is vital for travel and transport, but its high elevation, steep grades, and extreme weather make it a serious challenge for even the most experienced drivers.

Since opening in 1986, the highway has gained notoriety for its harsh winter conditions, including heavy snowfall, black ice, and sudden weather changes. Between 2004 and 2013 alone, 32 fatal crashes occurred, and each winter sees between 400 to 500 accidents. These numbers highlight the real risks drivers face when navigating the Coquihalla in winter.

Whether you’re a long-haul trucker, a commuter, or planning a road trip, understanding what makes winter driving on the Coquihalla so dangerous and how to prepare for it can mean the difference between a smooth journey and a serious emergency.

Why Winter Driving on the Coquihalla Highway Is So Challenging

The Coquihalla Highway is notorious for some of the most extreme winter driving conditions in North America. Stretching through remote, mountainous terrain in British Columbia, this route is prone to sudden weather shifts, heavy snowfall, and dangerously icy roads, making it a major hazard for drivers during the winter season.

From October 1 to April 30, winter tires or chains are required for vehicles traveling on this and other B.C. highways. Given the remoteness of the route, it’s essential to fill your gas tank and fully charge your phone before heading out. But even the best preparations may not be enough without understanding what makes this highway so difficult to drive in winter.

• Elevation and Terrain -The Coquihalla crosses multiple mountain passes, exposing it to frequent snowfalls, strong winds, and rapid temperature drops. These elements can lead to whiteout conditions where visibility is nearly zero. The high elevation also encourages ice formation on the road, significantly increasing the risk of skidding and accidents.
• Avalanches and Snowstorms - The mountainous geography makes the Coquihalla Highway vulnerable to avalanches. Snow can build up and release without warning, blocking the highway and stranding vehicles. Add to that frequent heavy snowstorms, and it’s easy to see why this route can be unpredictable and dangerous. Sudden weather changes can deteriorate road conditions in minutes, making it vital to stay updated and flexible with your travel plans.
• Flooding and Debris - In addition to snow and ice, flooding and falling debris also pose threats during winter. Rain, combined with melting snow, can create flood zones along parts of the highway. Rocks, trees, and other debris can fall onto the road, adding unexpected obstacles for drivers already dealing with slick, icy surfaces.

Winter Driving Kit Essentials: What You Need in Your Vehicle

When it comes to winter driving, preparation goes beyond snow tires and wiper fluid. A fully stocked winter driving kit can make all the difference if you encounter an emergency on icy roads, especially on remote highways like the Coquihalla.

According to the Canadian Automobile Association (CAA), only 36% of Canadians carry a winter driving kit in their vehicle. That means the majority of drivers aren’t prepared for the harsh conditions a Canadian winter can bring. As the CAA puts it, “Winter driving kits help make sure an inconvenience doesn’t turn into a tragedy.”

Here’s what your winter driving emergency kit should include:

Basic Emergency Supplies for Winter Driving

• Change of Winter Clothing - Extra gloves, toque, socks, and boots help keep you warm if you need to leave your vehicle.
• Working Jumper Cables - Batteries can fail quickly in cold temperatures—be ready to jump-start.
• Traction Aid (Sand, Kitty Litter, or Gravel) - Spread it under your tires to escape ice or snow buildup.

Safety and Warmth Supplies for Winter Driving

• Candle and Waterproof Matches - A small candle can generate heat inside your vehicle. Use it with caution, ideally paired with a sleeping bag or thermal blanket.
• Emergency First Aid Kit - Include bandages, antiseptic wipes, pain relievers, and any personal medical items.
• Ice Scraper and Snow Brush - Regularly clearing snow ensures visibility and reduces vehicle hazards.

Visibility and Communication Supplies for Winter Driving

• Extra Windshield Washer Fluid - Use fluid rated for –30°C to prevent freezing and maintain a clear windshield.
• Paper Map - In case GPS fails, especially in remote or mountainous regions.
• Flashlight with Extra Batteries - Critical for signaling, visibility, and emergencies in low light.
• Road Flares - Help you signal distress to other drivers and emergency responders.

Extra Provisions for Winter Driving

• Portable Phone Charger - A backup power source is vital for communication if your car battery dies.
• Food and Water - Store non-perishable snacks and bottled water for sustenance if you’re stuck for hours.

Safe Winter Driving Practices

Having a winter driving kit in your vehicle is a critical first step, but knowing how to drive safely in cold, icy conditions is just as important. Winter driving in Canada, especially on challenging routes like the Coquihalla Highway, requires extra caution and preparation.

Here are some essential safe winter driving practices to help you stay in control and reduce your risk of an accident:

Vehicle Preparation Tips for Winter Driving

• Test Your Battery - Cold temperatures reduce battery power. Get it tested and replace it if necessary before winter starts.
• Install Winter Tires - Required in B.C. from October 1 to April 30, these provide superior traction on snow and ice compared to all-season tires.
• Check Tire Pressure Often - Air contracts in cold weather, lowering pressure. Keep tires inflated to the manufacturer’s recommended level.
• Inspect Wiper Blades - Make sure your blades are in good shape and can clear slush and ice efficiently. Replace if worn.
• Use Cold-Weather Washer Fluid - Choose a fluid rated for –30°C or colder to keep your windshield clean and ice-free.
• Keep Your Gas Tank at Least Half Full - This helps prevent gas line freeze and ensures you have enough fuel in case you’re delayed or stranded.

Safe Winter Driving Techniques

• Don’t Use Cruise Control - In icy or snowy conditions, cruise control reduces your ability to react quickly and can increase the risk of losing control.
• Know How to Steer Out of a Skid - If your vehicle begins to skid, steer gently in the direction you want to go. Avoid sudden corrections that can make the skid worse.
• Accelerate and Brake Gently - Sudden acceleration or braking can cause your tires to lose grip. Take it slow and smooth.
• Leave Extra Space - Increase your following distance to 8–10 seconds behind the car in front of you to give yourself more time to react.
• Avoid Stopping on Hills - Try to keep moving when approaching a hill. Stopping can make it hard to regain traction and climb safely.

Staying Informed During Winter Driving

Staying updated on road conditions, closures, and severe weather is essential for safe and successful winter driving, especially on routes like the Coquihalla Highway. Conditions can change quickly, and having access to real-time information can help you avoid delays and dangerous situations.

Winter Driving and BC Road Alerts

British Columbia’s particularly high-risk routes, like the Coquihalla, are subject to frequent changes due to snowstorms, ice, avalanches, and debris. Before you head out, be sure to check for the latest updates through these reliable sources:

• DriveBC - The official site from the Ministry of Transportation and Infrastructure provides real-time road conditions, closures, and traffic camera feeds.
• Weather Apps - Tools like The Weather Network or Environment Canada apps offer up-to-date forecasts and storm alerts for specific regions.
• Local News - Tune into local radio or TV stations for breaking updates on major road conditions, weather events, and emergency broadcasts.
• The Alertable App - Receive real-time alerts directly to your phone for road closures, severe weather warnings, and safety notices, including alerts specific to the Coquihalla Highway. This app helps you stay informed and adjust your route or timing as needed to ensure safer winter driving.

By using multiple sources and planning ahead, you can reduce the risks associated with winter travel and make smarter decisions when conditions change. To learn more about Alertable, check out: Why Emergency Notification Software Like Alertable Is Essential Today

Additional Resources and Tips for Winter Driving

There are additional steps a person can take to help ensure their winter driving experience is safe, or at least to prepare them if an accident does occur. They include: 

• Vehicle Maintenance - Regular maintenance can prevent many winter driving issues. Ensure your vehicle is in good condition by scheduling regular service checks, especially before the winter season. This includes checking the antifreeze levels, inspecting the exhaust system, and ensuring the heating system is working properly.
• Emergency Contacts - Keep a list of emergency contacts, including roadside assistance and local emergency services, in your vehicle. Having these numbers readily available can be crucial if you encounter problems on the road.
• Roadside Assistance - Consider subscribing to a roadside assistance service that offers coverage in remote areas. This can provide additional peace of mind in case of breakdowns or other emergencies.

Conclusion: Winter Driving Safety on the Coquihalla Highway

Navigating the Coquihalla Highway in winter is no easy feat. Known for its extreme weather and challenging terrain, this stretch of road demands caution, preparation, and up-to-date information. However, with the right mindset and resources, winter driving on the Coquihalla can be done safely.

Start by assembling a complete winter driving kit with essentials like emergency supplies, traction aids, extra windshield washer fluid, and a reliable ice scraper. This gear can make all the difference if you become stranded or encounter dangerous conditions.

Next, adopt smart winter driving practices. Use winter tires, monitor your tire pressure, and drive with care—especially when accelerating, braking, or navigating hills. Routine maintenance checks, such as battery testing and wiper blade inspections, also go a long way in preventing breakdowns.

Equally important is staying informed. Download the Alertable App to receive real-time notifications about weather hazards, road closures, and traffic disruptions. This will help you adjust your route or delay your trip when necessary.

By combining preparation, caution, and access to the latest updates, you can reduce the risks associated with winter travel. For more tips on vehicle maintenance and safe driving, visit Be Car Care Aware. And don’t forget to install the Alertable App, your go-to tool for safer, smarter winter driving.