What is a key performance measure for transportation systems in terms of the movement of people and goods?

A key performance measure for transportation systems in terms of the movement of people and goods is person-miles or person-kilometers. This measure captures the extent to which the transportation system facilitates movement by quantifying the actual distance traveled by individuals or groups, either in terms of miles or kilometers. It reflects both the usage of the transportation system and the network's ability to effectively serve the mobility needs of the population.

Tracking person-miles or person-kilometers allows planners and policymakers to assess demand, understand travel patterns, and identify areas requiring improvement. This metric is integral for evaluating the efficiency and capacity of transportation systems, as it provides insights into how well the system is meeting the needs of its users in transporting people and goods across various distances.

In transportation planning, understanding the volume of person-miles or person-kilometers is vital for making informed decisions regarding infrastructure investment, service allocation, and operational efficiency. This measure offers a comprehensive perspective on system performance beyond just time or cost metrics, highlighting both the scale and effectiveness of the transportation network.