At the beginning of the 20th century, the idea of moving walkways was in vogue. After successes in Paris and Chicago, plans were drawn up for a three-speed moving sidewalk across the Brooklyn Bridge to alleviate traffic on the crowded bridge.
With the Brooklyn Bridge walkway, Schmidt upped the ante. This time he envisaged a loop system at each end of the bridge, with a series of four ever-faster walkways. Passengers moved from one to another until finally taking a seat on the benches aboard the fastest, which whisked them across the bridge at 16 km/h [~10 mph]. Because the system ran constantly, there would be no waiting and little momentum lost on stops and starts.