TARGET ZERO TEAM PROJECT DUI ZONE IDENTIFICATION AND BASELINE DATA KING COUNTY

Transcription

1 TARGET ZERO TEAM PROJECT DUI ZONE IDENTIFICATION AND BASELINE DATA KING COUNTY

2 TABLE OF CONTENTS COUNTY CHARACTERISTICS AND SUMMARY TOTAL FATAL COLLISIONS 4 DUI ZONE IDENTIFICATION... Overview Listing of Zones, Zone Analysis and Maps Auburn Area Federal Way Area Covington Area Renton Area South Seattle Area Downtown Area BASELINE DATA... Total Fatal Collisions, All Roads Citizen Reports of Possible DUI Crime Data Uniform Crime Report LInX Map LInX Crime Data 5 15 METHODOLOGY 25 2

3 "This project was supported by Grant No SC B awarded by the Bureau of Justice Assistance. The Bureau of Justice Assistance is a component of the Office of Justice Programs, which also includes the Bureau of Justice Statistics, the National Institute of Justice, the Office of Juvenile Justice and Delinquency Prevention, the SMART Office, and the Office for Victims of Crime. Points of view or opinions in this document are those of the author and do not represent the official position or policies of the United States Department of Justice." The following agencies participated in the production of this report: Washington State Patrol Washington State Department of Transportation Washington Traffic Safety Commission Pierce County Sheriff's Office/Northwest Regional Crime Analyst Network (NORCAN) representative Law Enforcement Information Exchange (LInX) 3

4 COUNTY CHARACTERISTICS AND SUMMARY King County: Most populous county in the state, and the twelfth largest county in the nation with 1.9 million residents. According to the U.S. Census Bureau, King County has a total area of 2,306 square mile, 92% land and 8% water. The highest point in the county is Mount Daniel at 7,959 feet (2,426 meters) above sea level. King County includes Vashon Island and Maury Island which are located in the Puget Sound. King County borders Snohomish County to the north, Kitsap County to the west, Kittitas County to the east, and Pierce County to the south. It also shares a small border with Chelan County to the northeast. Category King County Population 1,909,300 Square Miles 2,126 Density per Sq Mile 898 Lincensed Drivers 1,482,716 Registered Vehicles 1,797,848 Notable sites: Washington State Convention Center Starbuck s Corporate Headquarters Microsoft Corporate Headquarters Port of Seattle Boeing Field Emerald Downs Population and density statistics, licensed driver and registered vehicle statistics obtained from OFM, 2009 Total state route miles obtained from WSDOT TRIPS system State Route Annual Vehicle Miles County, Functional Class, and Rural/Urban A.V.M.T. (Annual Vehicle Miles Traveled) in Thousands report available on WSDOT website. FATAL COLLISIONS KING COUNTY Total Fatal Collisions in King County by Road Type and Year, Road Type Total City Street County Road Miscellaneous State Route Grand Total Source: FARS Overview Most Fatal Collisions occur on the City Streets, followed closely by State Routes. In 2009 there was 22.2% decrease in all fatal collisions. 49.5% (243) of all fatal collisions were Impaired Fatal Collisions. 4

5 DUI ZONE IDENTIFICATION ZONES The Target Zero Team Project goal aims to significantly reduce fatal and serious injuries involving impaired drivers. Therefore, enforcement efforts should be focused on areas with high numbers of fatal and serious injury crashes involving alcohol or drugs. Identify Zones of High Activity Target Zero Zones have been identified through GIS Analysis and ranked according to the following features: Areas were first calculated by density (incidents are closer to one another than other areas) of Impaired Fatal Collisions between 2005 and Areas were then further classified by the raw number of incidents within each Zone. Data from each Zone is extracted out and summarized for details specific to that Zone: time of day, day of week, BAC levels, speed, seat belt use, etc. For larger view see page 7. As the project continues, Zones will be monitored for changes in behavior, times, and monitored activity within and surrounding the Zones. Baseline Data Total Fatal Collisions and Total Fatal DUI Related Collisions ( , FARS Data) Citizen Reports of Possible DUI, Erratically Driven Vehicles, and Wrong Way Drivers ( , WSP CAD 9 11 Data) DUI Fatal Collisions result from crash involving one or more drivers with positive BAC (blood alcohol content of >0) or police reported alcohol involvement or positive drug test. 5

6 ZONES KING COUNTY FATAL DUI COLLISION ZONE IDENTIFICATION Zone Name Characteristics Number of Fatal Impaired Driver Collisions Number of People Killed in Impaired Driver Collisions Auburn Zone Fatal Crashes: Three out of the six impaired fatal collisions were speed related. Citizen Reports: Between 2007 and 2009, there were 3,377 citizen reports of possible DUI, wrong way or erratically driven vehicles to WSP via 911 in this zone. Number of calls peaked on Saturdays followed by Sundays and Fridays. 6 6 Federal Way Zone Fatal Crashes: Two out of the three fatal collisions occurred on City Streets. Citizen Reports: Between 2007 and 2009, there were 21 calls of possible DUI, wrong way vehicles or erratically driven vehicles to WSP via 911. The Number of calls peaked on Fridays followed by Saturdays and Sundays 3 3 Covington Zone Renton Zone South Seattle Zone Downtown Zone Redmond Zone Fatal Crashes: Two out of the three fatal collisions occurred on city streets. All of the fatal collisions happened in 2005 and Citizen Reports: Between 2007 and 2009, there were 716 calls of possible DUI, wrong way vehicles or erratically driven vehicles to WSP via 9 11 ( ) in this zone. The number of calls peaked on Fridays followed by Wednesdays and then both Thursdays and Saturdays holding third place. Fatal Crashes: Six out of the seven collisions were speed related. Citizens Reports: There were 1,245 calls of possible DUI, wrong way vehicles or erratically driven vehicles to WSP via 9 11 ( ) in this zone. The number of calls peaked on Saturdays followed by Fridays and then Sundays. Fatal Crashes: Out of 39 fatal collisions, 27 were speed related. Citizens Reports: Between 2007 and 2009, there were 6,411 citizen reports of possible DUI or erratically driven vehicles. The number of calls peaked on Saturdays followed by Fridays and then Sundays. Fatal Crashes: Out of 32 fatal collisions, 19 were speed related. Citizens Reports: Between 2007 and 2009, there were 4,533 citizen reports of possible DUI, wrong way or erratically driven vehicles. The number of calls peaked on Saturdays followed by Fridays and Sundays. Fatal Crashes: Two out of the three fatal impaired collisions occurred between midnight and 2am. In addition, both of these late night fatal collisions were speed related. Citizen Reports: There were no calls to WSP via 911 in this zone

7 KING FATAL DUI COLLISION ZONE IDENTIFICATION MAP ZONES 7

8 ZONES KING COUNTY: AUBURN ZONE 8

9 KING COUNTY: FEDERAL WAY ZONE ZONES 9

10 ZONES KING COUNTY: COVINGTON ZONE 10

11 KING COUNTY: RENTON ZONE ZONES 11

12 ZONES KING COUNTY: SOUTH SEATTLE ZONE 12

13 KING COUNTY: DOWNTOWN ZONE ZONES 13

14 ZONES KING COUNTY: REDMOND ZONE 14

15 KING COUNTY BASELINE: IMPAIRED FATAL COLLISIONS Impaired Fatal Collisions by Month and Year, MONTH Total Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Total Overview Out of 490 Fatal Collisions, 243 (49.5%) were Impaired Fatal Collisions. Out of 243 Impaired Fatal Collisions 147 were speed related, 13 were hit and run, and 2 vehicles were stolen. Most fatal collisions occurred in August and May but November had the smallest number. BASELINE Overview Seven Impaired Fatal Collisions involved a pedestrian. Five out of seven occurred between 10pm and 2am. The highest number of Impaired Fatal Collisions happened on Saturdays, followed by Sundays. The highest number of collisions happen between midnight and 3am. Impaired Fatal Collisions by Day of Week and Time of Day With Daily and Hourly Index, HOUR Sun Mon Tue Wed Thu Fri Sat Total Hourly Index Total Daily Index * An index of >1 is considered above average 15

16 KING COUNTY IMPAIRED FATAL COLLISIONS BASELINE 16

17 KING COUNTY IMPAIRED FATAL COLLISIONS BASELINE 17

18 KING COUNTY BASELINE: CITIZEN REPORTS OF POSSIBLE DUI BASELINE Baseline Citizen Reports of Possible DUI Data by Month and Year with Seasonal Index, Total Mean Index Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Total 38,756 34,822 31, ,944 Overview Possible DUI Citizen Reports decreased by 9.9% in 2009 from the previous year, and 19% from Citizen Reports averaged 85.9 calls per day in Months with the highest number of calls for possible DUIs or erratically driven vehicles are: May through August. 18 Overview Citizen Reports of Possible DUI chart by Day of Week indicates: Saturdays, followed by Fridays, and Sundays had highest number of possible DUIs or erratically driven vehicles. According to the Index column, time between 3:00pm and 5:00 pm has the highest number of calls. Citizen Reports of Possible DUI by Time of Day and Day of Week with Hourly Index, Sun Mon Tue Wed Thu Fri Sat Total Mean Index Total * An index of >1 is considered above average

19 KING COUNTY BASELINE: CITIZEN REPORTS OF POSSIBLE DUI BASELINE 19

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21 KING COUNTY BASELINE: CRIME DATA Crime Uniform Crime Report, The tables below represent information for King County for the years of 2006 through Each table represents a different aspect of the Uniform Crime Report. As a result, the totals in each table will not match because they represent number of crimes, number of subjects arrested, and number of court cases. Reported Index Crimes: Reported Index Crime for King County had decreased 6.9% in 2008 from the previous year, and decrease of 19.1% from Reported Index Crimes Washington Association of Sheriffs and Police Chiefs Calendar Year Murder Forcible Rape Aggravated Assault 3,936 3,560 3,097 Robbery 2,986 2,738 2,808 Arson Burglary 17,822 15,565 15,697 Theft 58,096 53,643 51,376 Motor Vehicle Theft 18,806 13,979 9,435 Total 103,194 90,683 83,433 BASELINE Number of total arrests: Number of total arrests in King County had decreased 16% in 2008 from the previous year, and a drop of 15.8% from Adult Arrests Washington Association of Sheriffs and Police Chiefs Calendar Year Murder Forcible Rape Aggravated Assault Robbery Arson Burglary Theft 5,909 7,094 5,404 Motor Vehicle Theft Drug Crimes 7,457 6,999 3,679 Other Crimes 31,909 31,487 29,450 Total 48,549 48,682 40,888 Superior Court Filing: Number of superior court filing had decreased 19.4% in 2008 from the previous year, and a drop of 15.4% from Superior Court Filings Office of the Administrator for the Courts Calendar Year Homicide Sex Crimes Robbery Assault 1,414 1,348 1,406 Property Crimes 2,612 2,763 2,112 Drug Crimes 3,661 3,828 2,832 Other Felonies 1,411 1,385 1,024 Total 9,973 10,474 8,440 Source: (Office of Financial Management, 2009) 21

22 KING COUNTY BASELINE: CRIME DATA BASELINE 22 Source: LinX

23 KING COUNTY BASELINE: CRIME DATA The information for the Crime Data comes from the Law Enforcement Information Exchange (LInX). The tables below represent arrests that occurred within King County during March The following agencies data is included: Algona PD, Auburn PD, Bellevue PD, Bothell PD, Clyde Hill PD, Des Moines PD, Duvall/Carnation PD, Edmonds PD, Enumclaw PD, Federal Way PD, Immigration & Custom Enforcement, Issaquah PD, Kent PD, King County Sheriff s Office, Kirkland PD, Lake Forest Park PD, Law Enforcement Support Agency, Medina PD, Mercer Island DPS, Port of Seattle Police Department, Redmond PD, Renton PD, Seattle PD, Snoqualmie PD, Tukwila PD, University of Washington PD, Washington State Patrol Arrests per Age BASELINE to to to to to to Number of Arrests per Day of Week Sun Mon Tue Wed Thu Fri Sat Source: LinX, March

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25 APPENDIX: METHODOLOGY Statistical Calculations Seasonal and Hourly Index Calculations Mean The sum of the cases for a specific time frame divided by the total number of cases. For example, the Mean of January takes the sum of each January (2007, 2008, 2009) and divides it by three. The Seasonal Index indicates when a month is above or below average activity 1 equals average activity. To calculate the Seasonal Index, find the Mean of the means (Grand Mean), then divide the monthly mean by the Grand Mean. Temporal Charts Temporal Charts are broken out into High, Med High, Low by taking the highest number and dividing by four to calculate ranges Zone Activity Chart Consists of a basic Excel Surface Chart, which finds the peak numbers of collisions and creates patterns that allow for comparisons and detection of movement through time and space across zones. Kernel Density METHODOLOGY Kernel Density calculates the density of a group of features (collisions, calls for service, arrest locations, etc.) around a specific grid structure. The density is calculated using a 1 mile search radius and measured in features per square mile. The density value is highest at the location of the feature and diminishes with increasing distance from the feature, reaching zero at the 1 mile search radius distance from the point. FARS Data Set, Fatal Collisions (Merged Data) 2522 Spatial Features/ 2622 Total Records 96.1% of the Total Records (2622) are mapped 25