Indiana Code Title 5. State and Local Administration § 5-16-9-4

(1) An accessible parking space must be at least ninety-six (96) inches wide.

(2) An access aisle adjacent to an accessible parking space must be at least sixty (60) inches wide and may not be restricted by a built-up curb ramp, planters, curbs, wheel stops, or any other obstructions.

(3) Two (2) adjacent accessible parking spaces may share a common access aisle.

(4) An access aisle:

(5) An accessible parking space and an access aisle must have a surface slope of not more than 1:50 (two percent (2%)) in all directions.

(6) An accessible parking space and an access aisle must be designated with blue lines.

(7) An accessible parking space and at least one (1) vehicle access route to the accessible parking space must have a minimum vertical clearance of at least ninety-eight (98) inches.

(1) is in existence on June 30, 1996;  and

(2) conforms to the specifications for the size and location of parking spaces under this section as the specifications were in effect on June 30, 1996;