Where does dwell collide?

In vision science, attentional dwell time is the period for which visual attention stays committed to one object before it can be redeployed to another, so that a second target appearing too soon is missed. Duncan, Ward, and Shapiro's 1994 Direct measurement of attentional dwell time in human vision measured this interval at several hundred milliseconds. The referent is the occupancy time of a limited attentional resource, measured in milliseconds, unrelated to a bus at a stop or a tool pausing in a workpiece beyond the shared idea of lingering.[1]

Unit

The time, in milliseconds, attention stays engaged on one object before it can move on

Recovery means

Attention becomes available again once the dwell period elapses and the resource is released from the first object

Measured by

Measured with two-target paradigms, tracking the time course over which a second target is missed and then recovered

In public transport operations, dwell time is the interval a transit vehicle spends stationary at a stop or station while passengers board and alight, including door opening and closing, a key component of travel time and a frequent source of delay and bunching. Vuchic's Urban Transit: Operations, Planning, and Economics treats dwell time within running time and schedule design. The referent is a stopped-service interval in a transit system, measured in seconds per stop, a different quantity from an attentional span or a machining pause.[2]

Unit

Seconds a vehicle is stopped at a stop or station for boarding and alighting

Recovery means

Not applicable

Measured by

Measured per stop as a function of boardings and alightings, fare and door configuration, and crowding