Which of the following is a primary purpose of a Fuel Flowage Fee?

A Fuel Flowage Fee is specifically designed to charge fuel suppliers or aircraft operators based on the volume of fuel pumped at an airport. This fee is a source of revenue for airports and is typically assessed per gallon of fuel that is dispensed. The rationale behind this fee is to address the costs associated with fuel management and environmental considerations, as well as to generate funding that may be used for various airport operations and maintenance.

The other options provided do not align with the primary aim of the Fuel Flowage Fee. For example, tracking passenger numbers is not relevant to fuel dispensation; terminal improvements may receive funding from various sources but are not a direct purpose of this fee; and subsidizing rental car fees pertains to a different area of airport revenue management altogether. Understanding the intent behind the Fuel Flowage Fee is crucial for grasping the financial mechanisms airports use to ensure effective management of their resources.