What does the blue section on the highway mean?

[VonCora]

Blue sections on the highway represent the driving route from the starting point to the destination. Precautions for driving on the highway: 1. Maintain a steady speed: After entering the highway, be sure to drive at a constant speed, do not exceed the speed limit, and avoid alternating between fast and slow speeds. This is not only unfavorable for other vehicles but also affects the fuel efficiency of your vehicle. 2. Be decisive when overtaking: During driving, some drivers hesitate when they encounter situations requiring overtaking. If you decide to overtake, ensure there are no obstacles in the overtaking lane and act immediately and decisively, avoiding hesitation.

[DaisyLee]

I always pay special attention to those road condition signs when I first get on the highway, especially when I see blue sections—it feels amazing. Blue indicates that the road is clear, with few cars and high speed. Every time I see it, I feel at ease to accelerate, saving a lot of time. On long-distance drives, it helps me avoid congestion points, which is super practical. I remember once driving from Beijing to Tianjin—when the navigation showed a blue bar, I chose that route directly, and there wasn’t a single bit of traffic the whole way. Of course, not all highways have this system, but major routes like the Jingzang Expressway use it extensively. It’s based on sensor-monitored real-time traffic flow, and the color coding is designed for drivers to understand at a glance. When I see it turn yellow or red, I brake early to maintain a safe distance. Overall, blue roads represent smooth traffic, no surprises, and a more efficient journey. Everyone driving should rely more on navigation apps to confirm real-time traffic updates.

[GiannaDella]

When I first started learning to drive on the highway, I was completely confused by the blue lines on the signs and even thought they indicated water on the road. Later, an experienced driver explained that blue sections mean the road is running smoothly without congestion, which feels particularly comfortable. I really like this feeling because as a beginner, it's easy to get nervous. When the blue bars appear, the traffic flows steadily, allowing me to maintain a stable speed without frequent lane changes, reducing the risk of scratches and saving fuel. The contrast with red for congestion and yellow for warnings is stark, making it simple and easy to understand—common in smart highway systems. I recommend beginners use navigation apps like Baidu Maps, which also display similar colors to preview road conditions in advance, helping to avoid trouble and save hassle. Encountering blue sections is a great opportunity to build driving confidence, but don’t forget to check road signs in real-time to stay safe in case of sudden changes.

[DelJaxson]

The blue section, in my view, is a form of traffic data visualization. Through sensor systems, road conditions are collected, with blue representing the optimal state—smooth traffic flow without delays, ideal for high-speed driving, saving time and maximizing efficiency. It contrasts with red indicating congestion and yellow serving as a warning, making it simple yet effective. On highways, I often observe these indicators; when blue bars appear, sensors detect no accidents or vehicle buildup. While not available on all roads, more areas are adopting this system to enhance the driving experience. The blue code updates based on real-time feedback, and drivers should pay attention to these indicator changes to ensure a smooth journey. Blue was chosen for its ease of visual recognition, remaining clear even in sunlight, supporting the development of smart transportation.