On urban bus routes, interior capacity is often cited as a pressing issue. A frequently proposed solution is to reconfigure the interior of transit vehicles to use more aisle-facing seats instead of forward-facing benches. In theory, aisle-facing seats use up less space, which provides more interior standing room and space to maneuver the carts, strollers, and various objects customers bring on board.
In theory. In practice. . .
This picture was taken aboard an evening-peak NABI 60-BRT vehicle on the MAX route, operated by Transfort (Fort Collins, Colorado). In front of the rear wheel-well is a forward-facing pair of seats, with three aisle-facing seats occupying the wheelchair securement location. According to the website of the seat manufacturer, transverse (forward-facing) rows are manufactured to be between 35-37 inches in width, resulting in an individual seat width of 17 to 19 inches.
Notice how the feet of passengers sitting in aisle-facing seats protrude more into the aisle than the passenger in the transverse row. The aisle-facing seats above the wheel-well have a gap behind them, as the wheel-well is wider than the length of a seat; but the seats in front of the transverse row are up against the interior sidewall. The customer in the transverse seat protrudes slightly into the aisle, perhaps an inch or two, and also has their foot rotated slightly outward into the aisle. In comparison, the foot of the customer in the aisle-facing seat protrudes further into the aisle.