Can I turn on the width indicator lights when entering a tunnel?

[CaliLynn]

You can turn on the width indicator lights when entering a tunnel. Here are the specific details about width indicator lights: Introduction: Width indicator lights, also known as clearance lights or parking lights, are sometimes referred to as evening driving lights. As the name suggests, width indicator lights are used during evening driving to indicate the width of the vehicle and alert other vehicles ahead and behind. Disadvantages: Most width indicator lights use halogen bulbs, while daytime running lights use LED bulbs. In comparison, halogen bulbs have disadvantages such as high energy consumption, high failure rate, and the filament being prone to melting after prolonged use. Therefore, width indicator lights are not suitable for long-term use as daytime running lights. Moreover, in terms of light intensity, width indicator lights are far less effective than daytime running lights.

[AmaraFitz]

When driving into a tunnel, I strongly advise against using only the parking lights, as they are too dim to be effective. Parking lights are meant to make your car's outline visible when parked or moving at low speeds, but in the dim lighting of a tunnel, you should turn on your headlights or dipped beams to ensure you can see the road and other vehicles clearly. Having driven through numerous mountain tunnels, my experience tells me that relying solely on parking lights can lead to trouble—for instance, sudden changes in lighting may cause delayed reactions, potentially resulting in accidents. Traffic regulations also explicitly require headlights to be turned on when entering a tunnel—not just for safety, but also to avoid fines. Make it a habit to switch on your lights in advance as you approach a tunnel, improving visibility and giving you greater peace of mind while driving.

[AutumnMarie]

Once I was too lazy to switch my lights when driving into a tunnel and only kept the parking lights on. It turned out everything was blurry inside, and I almost rear-ended the car in front. Later, I realized that parking lights are designed as an energy-saving, low-light option and aren't suitable for moving vehicles in tunnels. Tunnels have poor and rapidly changing lighting conditions. Turning on the headlights provides sufficient illumination to see blind spots and makes it easier for others to notice you. From that day on, I've always switched to low beams as soon as I enter a tunnel, which gives me much more peace of mind. These small details matter when it comes to safety—don't cut corners. Using the right lights is what really counts.

[ClaireRose]

The position light is just a supporting role in the car's lighting system, with low power and only helping people identify the width of the car. In dark environments like tunnels, you need to turn on the main headlights or dipped beams because they can output strong light to illuminate the road ahead. I've tried it—driving with just the position lights in a tunnel is like having no lights on at all, making it hard to see the road markings. The correct approach is to switch to automatic or manual headlight mode in advance to ensure sufficient lighting power for safer driving.