Why should drivers control their speed when driving in a tunnel?

[StNoah]

The main reason is that the lighting inside tunnels is poor and relatively dark. This explains why vehicles generally need to turn on their lights and avoid lane changes when entering tunnels. Failure to control speed can easily lead to rear-end collisions and traffic accidents. Precautions: 1. Do not stop in a tunnel unless encountering an emergency. Stopping inside a tunnel poses significant safety risks and may cause major traffic accidents. 2. Stopping in a tunnel may first lead to traffic accidents. Due to poor lighting, drivers' visibility is reduced. If a vehicle stops arbitrarily in a tunnel, following vehicles traveling at high speeds may easily cause rear-end collisions. 2. It can cause road congestion. Tunnels typically have only two lanes in one direction. Stopping inside a tunnel not only affects driving safety but can also cause severe traffic congestion during peak hours, posing substantial safety hazards.

[MacIsabel]

When driving into a tunnel, I have to pay special attention to controlling my speed, all for safety reasons. The light inside the tunnel suddenly dims, and it takes a few seconds for the eyes to adjust, making it hard to see the car ahead or any potholes; if driving too fast and encountering an emergency stop or an obstacle blocking the way, not braking in time could lead to a collision. I've experienced this situation before—once, upon entering a tunnel, the car in front suddenly braked, and I almost rear-ended it, fortunately reacting in time because I was driving slowly. Also, the sudden glare of light at the exit can temporarily blind you, making it hard to control the direction at high speeds. Plus, the noise inside the tunnel is loud, making it easy to overlook alarm sounds, so slowing down helps maintain clear judgment. Overall, this habit has saved me and others multiple times, and developing it in daily driving makes things much easier.

[DeGianna]

From a vehicle performance perspective, controlling speed in tunnels is crucial. The enclosed tunnel environment restricts airflow, and high-speed driving creates strong air currents that can cause vehicle drift or even sway. The road surface is often wet or oily, reducing tire traction and increasing the risk of skidding during sharp turns or braking. Engines have poor heat dissipation in confined spaces, and overheating may lead to breakdowns, requiring gentle driving for prevention. Additionally, resonance effects caused by tunnel structures amplify vibrations, affecting handling; moderate speed reduction helps stabilize steering. I often consider these details, such as using cruise control adjustments to save fuel while ensuring a safe journey.

[StAllison]

Slowing down in tunnels is essential primarily due to the darkness, significant visual interference, and shortened reaction time. The insufficient lighting inside obscures the outlines of vehicles ahead and behind, making it easy to overlook potential hazards like pedestrians or debris at slightly higher speeds. Additionally, the narrowed field of vision prevents anticipating distant road conditions, so maintaining a lower speed provides buffer space to handle sudden incidents. Moreover, the tunnel's acoustic effects cause noise reverberation, which can distract attention—controlling speed helps maintain focus on driving. I always adhere to this practice during my daily commute; it's a simple habit that significantly enhances safety.