This device, typically found within taxis, computes the total cost of a journey. The calculation often incorporates several variables, including distance traveled, time elapsed, and potentially any applicable surcharges or base fares. For example, upon entering a cab, the meter starts at an initial amount, and this increases incrementally as the vehicle progresses and time passes.
Its implementation provides transparency and standardization to pricing within the taxi industry. It allows passengers to observe how the final charge is derived, offering a sense of fairness and accountability. Early versions were mechanical, but modern iterations are electronic and offer additional features like displaying the current rate and printing receipts. This has helped build trust between riders and transportation providers over time.