Accessible parking spaces must strictly adhere to ADA-compliant dimensions in order to provide safe, functional, and convenient access for individuals with disabilities. Standard car-accessible spaces are required to be at least 96 inches (8 feet) wide and must include an adjacent 60-inch (5-foot) access aisle, ensuring there is sufficient mobility clearance for individuals using wheelchairs or other assistive devices. For van-accessible spaces, the outlined requirements specify either a 132-inch (11-foot) parking space with a 60-inch aisle or a 96-inch (8-foot) parking space paired with a 96-inch (8-foot) access aisle. These dimensions are carefully designed to accommodate side-loading lifts and ramps effectively, ensuring not only compliance but also practicality for users' diverse accessibility needs.

Indiana requires that every accessible parking space be marked with a clearly visible vertical sign displaying the International Symbol of Accessibility. This sign must be positioned at the head of the parking space and mounted high enough so it cannot be hidden by a parked vehicle—specifically, the bottom of the sign must be at least 60 inches above the ground. For van-accessible spaces, an additional “Van Accessible” designation is required. Signs must use a nonglare finish and high-contrast colors to ensure readability in all conditions, and they must remain unobstructed by landscaping, snow, or other objects. Proper sign placement ensures drivers can easily identify reserved spaces and supports full compliance with Indiana and ADA accessibility standards.

Indiana follows ADA standards requiring that every accessible parking space connect to the building or facility entrance by a clearly defined accessible route. This route must be at least 36 inches wide, have a firm, stable, slip-resistant surface, and maintain a gentle slope not exceeding 1:20 (5%) along the path or 1:12 (8.33%) when a ramp is necessary. Cross-slopes cannot exceed 1:48 (2%) to ensure safe wheelchair travel. The route must be free of obstacles such as curbs, abrupt level changes, gravel, steps, or uneven pavement, and when elevation changes are required, compliant curb ramps must be provided. Accessible routes must lead directly from the access aisle of the handicap parking space to the nearest accessible entrance, ensuring a smooth, unobstructed, and safe pathway for individuals with disabilities.

When building pedestrian routes, sidewalks, or parking access in Indiana, elevation changes (like curbs) must include ramps or curb ramps meeting state and ADA standards. Ramps must have a 1:12 maximum slope (one inch rise per 12 inches run) and a vertical rise limit of 30 inches per run. Exterior accessible routes, including curb ramps, must be at least 36 inches (91.4 cm) wide. Level landings, at least 60 inches (152.4 cm) long and as wide as the ramp, are required at ramp direction changes or at the top and bottom of ramps.  Surfaces must be stable, firm, slip-resistant, and designed to prevent water accumulation outdoors. Accessible parking spaces must be at least 96 inches wide, with a 60-inch-wide, unobstructed access aisle. If the aisle connects to a walkway, a compliant curb ramp must be included.