premise: A shared zone is an implementation of a living street in Australia and New Zealand, where pedestrians, cyclists and motorised traffic share the same road space. Special rules and speed limits apply for shared zones. Shared zones are related, but not automatically the same as shared space, which is a somewhat wider concept including elements such as urban design.
hypothesis: The shared zone was designed for people operating 4 wheeled vehicles, 2 wheeled vehicles or no vehicle at all.
reason: It says the zone was designed for people (no vehicle), 2 wheels (cycles) or 4 wheels (cars).