Which parking orientation maximizes the number of parking spaces?

The orientation that maximizes the number of parking spaces is 90-degree alignment. This arrangement allows for vehicles to park perpendicularly to the driving aisle, utilizing the maximum amount of space available. Each row of 90-degree angled parking uses a relatively small amount of aisle space while maximizing the linear space for parking. This configuration tends to be the most efficient in densely packed scenarios, as vehicles can enter and exit their spaces directly without requiring additional maneuvering room on the sides.

In contrast, angled and diagonal alignments, while sometimes providing easier access for entering and exiting spaces, typically result in fewer total parking spots because they reduce the number of spaces that can be placed in a given linear distance. Parallel parking, although useful in certain contexts, is less space-efficient in terms of slot utilization compared to perpendicular parking, as it occupies more linear frontage for the same number of cars parked.