Spatial area where only pedestrians are permitted. Strictly speaking, not even delivery vehicles or public transport vehicles are allowed in a pedestrian zone. In such a strict definition, the terms pedestrian zone and “pedestrian-only” zone are synonymous.
In many cases, however, exceptions are granted for delivery vehicles during certain time windows and/or for public transport vehicles. If such vehicles meet zero emission standards the pedestrian zone would automatically also be a ZEZ.
In contrast see Pedestrian-transit zone
(sometimes called “transit malls” in the U.S.)