How the road speed of vehicle is conveyed to driver desk?

The road speed of a vehicle is typically conveyed to the driver's dashboard through a speedometer, which displays the current speed using either an analog dial or a digital readout. This information is derived from a speed sensor, usually located on the transmission or wheel, which sends data to the vehicle's electronic control unit (ECU). The ECU processes this data and relays it to the speedometer for real-time display. Additionally, some modern vehicles may provide speed information through heads-up displays or infotainment systems.