What does the red line segment on the navigation map represent?

[CourtneyDella]

The red line on the map represents bus routes. Below is relevant information about car navigation systems: 1. Concept: An in-car navigation device is a driving assistance tool that helps users accurately determine their current location, calculates routes based on predetermined destinations, and guides users to their destinations through both map displays and voice prompts. 2. Operating Principle: GPS consists of three main components: space satellites, ground monitoring, and user receivers. In space, 24 satellites form a distributed network, positioned in 6 quasi-synchronous orbits around Earth at an altitude of 20,000 kilometers with an inclination angle of 55°. Each orbit contains 4 satellites. GPS satellites orbit Earth every 12 hours, enabling any location on Earth to simultaneously receive signals from 7 to 9 satellites.