A GPS speedometer is a device that uses signals from satellites to determine the speed of a vehicle. Unlike traditional speedometers that rely on the vehicle's wheels, a GPS speedometer calculates speed based on the distance traveled over time. This technology provides accurate readings, even in situations where wheel-based systems may fail, such as when tires are slipping. Many modern smartphones and navigation systems come equipped with GPS speedometer features. These devices can display real-time speed, track routes, and even provide alerts for speed limits. This makes them useful tools for drivers who want to monitor their speed and improve safety on the road.