Brent Rollins is the man…for design anyway
Escalators and stairs are, it turns out, problem points in walking, and not just for the commuters at Penn Station. As John Templar notes in his oddly fascinating book The Staircase, an estimate for one U.S. year found that more than 6,000 people died as a result of a fall on stairs or a ramp. Studies have noted that most stair accidents involve either the first three or last three stairs on a flight. “On these high risk-steps,” Templar writes, “many orientation factor changes occur—route direction change, changes of view, and very large changes of illumination.” As we come to the top or bottom of a stair, we are preparing to change our gait, and we may be looking ahead to where we’re going next. We are distracted pedestrians. What’s more, when we fall, Templar notes, “our natural defense reaction systems will not help much until after we have already fallen about one step of 7 inches (18 cm).” The design of the stair and the tread plays a largely hidden, but crucial role; in one problematic staircase, the stairs were marked with lines parallel to the edge of the tread. In six weeks, 1,400 people fell on the stair: They were confusing the marked line with the actual edge of the tread.
Stairs are scary.