A single-helix configuration refers to a specific design layout of a parking ramp or parking garage where the vehicle circulation follows a continuous spiral path along a single helical ramp. In this configuration, the ramp is designed in a helix shape, resembling a spiral staircase, allowing vehicles to move smoothly between different levels of the parking structure. The single-helix design optimizes space utilization and provides efficient access to parking spaces by minimizing the travel distance and maximizing the number of parking spots available. It is commonly used in multi-level parking structures to facilitate the vertical movement of vehicles while optimizing the use of limited space.