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.