Uniform Federal Accessibility Standards (UFAS)

A4.2.3 WHEELCHAIR TURNING SPACE.

This standard specifies a minimum space of 60 in (1525 mm) diameter for a pivoting 180-degree turn of a wheelchair. This space is usually satisfactory for turning around, but many people will not be able to turn without repeated tries and bumping into surrounding objects. The space shown in Fig. A2 will allow most wheelchair users to complete U-turns without difficulty.

Figure A2
Space Needed for Smooth U-Turn in a Wheelchair