Call Concurrency and Reliability

One way to look at resource workload is to examine the number of times multiple incidents happen within the same time frame in each station area. Incidents during the study period were examined to determine the frequency of concurrent incidents¹ within each station’s response area. This is important because concurrent incidents can stretch available resources and extend response times. (P.94)

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The ability of a fire station’s first-due unit(s) to respond to an incident within its assigned response area
is known as unit reliability. The reliability analysis is normally done by measuring the number of times
response units assigned to a given fire station were available to respond to a request for service within
that fire station’s primary service area². (P.95)

1. concurrent incidents: concurrent = 同時發生的，故 concurrent incidents = 同時間發生的案件 ↩︎
2. primary service area: 主要服務的區域，其實就是指轄區 jurisdiciton ↩︎