WORKSTUDY-A_SANTA ANA PD - STRATEGIC PATROL STAFFING PLAN - FINAL REPORT

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Visibility Variables In order to determine the number of officers needed to meet the visibility performance objective, it is necessary to assess three variables. First, the visibility objective for two types of roadways must be set: 1) highway and arterial roadways, and 2) collector and residential streets. These objectives are based on the answer to the following questions: 1) how often should a patrol officer pass any given point on a highway or arterial roadway? and 2) how often should a patrol officer pass any given point on a collector or residential street? Basically, if a person was to stand on a street, how often should they see a patrol officer? The visibility objectives were set at 4 hours for highway and arterial roadways and 36 hours for collector and residential streets. This basically means that an officer should pass any given point on a highway or arterial roadway once every 4 hours and any given point on a collector or residential street every 36 hours. It is also important to remember that this performance objective is basically an average. Therefore, there will be some residential roadways in which an officer is seen more frequently than once every 36 hours. Likewise, there will be some residential roadways in which an officer is seen less frequently than the visibility objective. Second, the visibility objectives established in the MAPP require that the number of roadway miles be taken into account. The number of highway/arterial and collector/residential roadway miles was provided to the research team by SAPD personnel. The number of roadways miles was provided for each of the four patrol districts. Third, average patrol speed must be determined. The patrol speed was provided to the research team by SAPD personnel. The response speed provided is The patrol speeds may seem low aggregate for patrol so the same value is used for each patrol district. but they take into account the time in which the officer must stop at stop lights/signs, slow down to verify or dispel suspicious circumstances, and identify precursors to criminal activity. The visibility objective data used in the development of the MAPP are presented in Table 7. Table 7 Base MAPP Input Values for Visibility Variables District 1 District 2 District 3 District 4 MAPP Variable Westend Northeast Southeast Southcoast Visibility Objective Highway and 4 4 4 4 hours Arterial Roadways () Visibility Objective Collector and 36 36 36 36 hours Residential Streets () Miles of Highway and Arterial Roadways 18.62 13.41 15.93 22.01 Miles of Collector and Residential Streets 118.30 85.00 96.78 129.73 Average Patrol Speed 16.2 mph 16.2 mph16.2 mph16.2 mph Weights for Performance Objectives As discussed, the MAPP focuses on several performance objectives. By weighting the performance objectives, SAPD command staff can decide which of the performance objectives is most important and thus should hold more weight in determining the number of officers that need ЊЋ