What is the primary purpose of E-9 maps?

The primary purpose of E-9 maps is to detail parking allocation. These maps are specifically designed to provide a clear and organized representation of where vehicles can be parked within an area, which is crucial for managing space effectively and ensuring that operations run smoothly.

Parking allocation maps help in identifying designated parking areas for various types of vehicles, including those related to specific operations or personnel, thereby enhancing efficiency and safety. This function is vital in environments where space is limited and where the proper organization of vehicles can mitigate congestion and facilitate quicker access to operational areas.

Other options serve different functions: flight path illustrations are used for aviation purposes, topographical information focuses on the physical features of the terrain, and emergency evacuation routes are critical in emergency planning but are not the main purpose of E-9 maps.