2010 ADAS 403.5.2 Clear Width at Turn
Where the accessible route makes a 180 degree turn around an element which is less than 48 inches wide, clear width shall be 42 inches minimum approaching the turn, 48 inches minimum at the turn and 42 inches minimum leaving the turn.
EXCEPTION: Where the clear width at the turn is 60 inches minimum compliance with 403.5.2 shall not be required.
Code according to 2010 ADAS. Check your state’s accessibility laws. Some states such as California, Georgia and Florida have additional requirements and standards.