What does the red line on the navigation mean?
2 Answers
The red line on the navigation indicates that the route selected by the driver is congested, the green line represents smooth traffic, the yellow line indicates crowded conditions, and the dark red line signifies severe congestion. The functions of navigation include: 1. Searching and processing map data; 2. Matching maps; 3. Planning travel routes; 4. Human-machine interaction interface; 5. Wireless communication. Navigation systems are equipped with GPS global satellite positioning functionality. Drivers only need to input the destination into the car navigation system, which will then automatically calculate the optimal route based on electronic maps and provide turn-by-turn guidance during the journey.
I've been driving for over a decade, and the meaning of that red line on the navigation is simple: it means traffic congestion! Red indicates very slow-moving or completely stationary traffic, which is commonly seen on highways or in busy urban areas. Why? Because traffic monitoring systems collect real-time data, accounting for accidents, construction, or holiday crowds. Whenever I see a red line, I immediately look for alternative routes, such as side streets or highway service roads—this trick has saved me a lot of time. Navigation systems use GPS and mobile signals to estimate traffic density, with colors graded by flow: green means smooth sailing, yellow means slightly slow, and red indicates heavy congestion. It's best to keep real-time traffic updates enabled to avoid delays and increased fuel consumption by rerouting in advance. In short, the red line is a warning bell, prompting drivers to take action early and avoid wasting energy stuck in traffic.
