What does dark green mean in navigation?

[CatherineAnn]

Dark green in navigation indicates that the road section is extremely smooth and unobstructed. Dark red in navigation represents severe congestion, red indicates congestion, yellow signifies slow-moving traffic, green denotes smooth traffic flow, a solid blue line means no traffic information is available, a dashed blue line represents internal roads (including non-navigable routes), and a dashed gray line indicates roads that are impassable for vehicles. Additional information: The automotive navigation system mainly consists of two parts: the navigation host and the navigation display terminal. The built-in GPS antenna receives data signals from at least three of the 24 GPS satellites orbiting the Earth, thereby determining the current position of the vehicle. By matching the position coordinates determined by the GPS satellite signals with the electronic map data, the navigation host can accurately locate the vehicle on the electronic map.