In new and existing buildings, elevators must conform to the guidelines set for by the Americans With Disabilities Act (ADA), which was signed into law in 1990 and ensures that people with disabilities receive reasonable accommodations in order to participate in society, which includes access to public and commercial buildings. Some of the requirements are that the doors must remain fully open for at least three seconds, call buttons are a minimum of an inch in diameter and centered 42 inches from the floor, the door width must be at least three feet wide, and emergency controls must be available at the bottom of the elevator control panel. What many people don’t know is that elevators going up ding once and elevators going down ding twice to help those who have visual impairment.
