Make sure you get in lane early. Make sure your lights are on. It's really important to see and be seen – that sunny day won't make any difference when you're in a tunnel. Keep an eye out for speed limits, as they might change as you approach a tunnel so stay alert for signs near or on the tunnel entrance.

Before entering a tunnel in 2026, a driver must take several critical safety steps to ensure visibility and situational awareness. First, you must turn on your headlights (not just daytime running lights) to ensure your taillights are also illuminated for vehicles behind you. Second, you should take off your sunglasses to allow your eyes to adjust more quickly to the change in light levels. Third, it is highly recommended to check your fuel gauge; breaking down inside a tunnel is significantly more dangerous and disruptive than on an open road. Fourth, you should tune your radio to the local traffic frequency (often indicated on signs before the entrance) to receive emergency broadcasts in case of an accident or fire ahead. Finally, you should increase your following distance and strictly adhere to the speed limit. In 2026, many modern vehicles with "Tunnel Mode" will automatically close air vents to prevent exhaust fumes from entering the cabin, but manual adjustment is still a good practice in older cars.