The term "passenger space" refers to the area within a vehicle that is specifically designed and designated for passengers. This includes both seating areas, such as rows in an airplane or seats in a bus, as well as other spaces like overhead compartments, storage bins, and lavatories. The amount of passenger space available on a particular mode of transportation can vary depending on its size, design, and intended use. In general, the more passenger space there is, the greater the comfort level for those riding or traveling in that vehicle.