The term urban is widely considered to be equivalent to busy, bustling or crowded. It is synonymous with active and associated with density, services and manmade physical structures.
The extend of all these aspects however is very much a subjective quality rather than a quantity. In large parts these expectations are conditioned through experience and vary greatly depending on location and context.
If the conditions are disrupted however they generate a moment of surprise. Very much so the video Urban Isolation by Russell Houghten. Where is everybody? The backdrop of massive infrastructure suggests otherwise, but the streets are empty. An earlier post refers to the same topic with work from photographer Matt Logue.