The Relationship between Fire-Fighting Unit Availability and the Number of Units Dispatched.

摘要

An important characteristic of a dispatching policy is the number of units sent to an incoming alarm. A common dispatching policy when alarm assignment cards (running cards) are used often sends whichever units are available from a particular group of units. Under this kind of policy, on the average, fewer units will be sent to an alarm in a busy part of the city than to one in a region with low alarm rate. This is a reflection of the reduced unit availability in the busy region. In this paper, a simple quantitative relationship between average availability and average number of units sent is documented.