What is the general speed limit in highway tunnels?
2 Answers
Highway tunnels typically have a speed limit of 60 to 80 kilometers per hour. Lane changing and overtaking are prohibited in tunnels due to limited space and poor lighting conditions, which can easily disrupt normal traffic flow. Moreover, most tunnels are equipped with comprehensive camera surveillance systems. Illegal lane changes will result in a 3-point penalty and a fine of 150 yuan. Below are precautions for driving in tunnels: 1. When drivers see they are approaching a tunnel, they should check the speed limit signs on both sides of the road in advance. If using navigation, it usually provides early warnings about tunnel speed limits, at which point drivers should slow down and maintain a safe distance from vehicles ahead. 2. Before entering a tunnel, drivers must turn on their headlights and keep them on until completely exiting the tunnel. The sudden darkness upon entering can cause temporary visual impairment as eyes struggle to adapt to the abrupt change in lighting. Turning on headlights beforehand helps mitigate this visual shock. 3. Lane changing, U-turns, and tailgating are prohibited in tunnels. When exiting, drivers should gradually reduce speed to allow their eyes to adjust to the bright outdoor light. Conspicuous warning signs are posted above or beside tunnel entrances—drivers must strictly follow regulations as all tunnels have 24/7 video surveillance with zero tolerance for violations.
I've been driving on highways for many years, and the speed limit in tunnels is generally lower than on regular highway sections, usually set around 80 kilometers per hour, with a maximum not exceeding 100. Due to sudden changes in lighting inside tunnels, parallax can easily mislead distance judgment. I always slow down in advance before entering a tunnel and turn on the headlights to improve visibility. I remember one time in a mountain tunnel where the speed limit was only 60, I went slightly over, and the navigation alarm went off, almost resulting in a ticket—a profound lesson. Over time, I've learned that safety comes first, far more important than saving time, especially in enclosed spaces. If the car ahead brakes suddenly, not slowing down could lead to a dangerous rear-end collision. New drivers must pay attention to entrance signs and not take risks for convenience. This speed limit standard is based on safety design, a rule that's pretty much the same globally.
