What is the purpose of the vehicle's speedometer?

The vehicle's speedometer serves the crucial function of informing the driver of the current speed at which the vehicle is traveling. This is essential for safe driving, as it allows the driver to adhere to speed limits, make informed decisions about road conditions, and respond appropriately to the actions of other drivers and pedestrians. The speedometer helps ensure compliance with traffic laws and enhances overall road safety by providing real-time feedback on the vehicle's speed.

The other options, such as tracking fuel consumption, measuring tire pressure, or assessing engine temperature, represent different vehicle gauges or indicators that serve separate functions. Each of these systems is important, but they do not relate to or replace the primary role of the speedometer, which is focused solely on speed measurement.