TARGET ZERO TEAM PROJECT DUI ZONE ...komonews.s3.amazonaws.com/101101_dui_pierce.pdfPierce County is the second most populous county in Washington state. According to the U.S. Census

TARGET ZERO TEAM PROJECT

DUI ZONE IDENTIFICATION AND BASELINE DATA

2005‐2009

PIERCE COUNTY

2 UNDER 23 UNITED STATES CODE ‐ SECTION 409, THIS DATA CANNOT BE USED IN DISCOVERY OR AS EVIDENCE AT TRIAL IN ANY ACTION FOR DAMAGES AGAINST THE WSDOT, OR THE JURISDICTIONS INVOLVED IN THE DATA

TABLE OF CONTENTS

COUNTY CHARACTERISTICS AND SUMMARY…………………………………… TOTAL FATAL COLLISIONS

4

DUI ZONE IDENTIFICATION…………………………………………………………... Overview Listing of Zones, Zone Analysis and Maps

Tacoma Area Puyallup Area Lakewood Area Fife Area

5

BASELINE DATA………………………………………………………………………... Total Fatal Collisions, All Roads Citizen Reports of Possible DUI Crime Data

12

METHODOLOGY………………………………………………………………………… 21

UNDER 23 UNITED STATES CODE ‐ SECTION 409, THIS DATA CANNOT BE USED IN DISCOVERY OR AS EVIDENCE AT TRIAL IN ANY ACTION FOR DAMAGES AGAINST THE WSDOT, OR THE JURISDICTIONS INVOLVED IN THE DATA 3

"This project was supported by Grant No. 2009‐SC‐B9‐0145 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 posi‐tion 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)


Pierce County is the second most populous county in Washington state. According to the U.S. Census Bureau, the county has a total area of 1,806 square miles (4,679 km²), of which 93% is land and 7% is water. Pierce County is the home to the Port of Tacoma, which is the nation’s sixth‐largest container port. Pierce County is also home of McCord Air Force Base and Ft. Lewis Army base. According to WA State, Office of Financial Management, these military bases contribute significantly to economic activity throughout the state of Washington. In Pierce county, 30% of economic activity comes from military bases.

COUNTY CHARACTERISTICS AND SUMMARY

Category Pierce County

Population 813,600

Square Miles 1,806

Density per Sq Mile 484.6

Lincensed Drivers 535,508

Registered Vehicles 761,667

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.

Notable sites: Tacoma Narrows Bridge Fort Lewis Military Reservation McChord Air Force Base Tacoma Dome Other scenic natural beauty

places.

Total Fatal Collisions in Pierce County by Road Type and Year, 2005‐2009

Road Type 2005 2006 2007 2008 2009 TotalCity Street 16 14 11 12 9 62

County Road 15 18 13 29 19 94State Route 17 23 31 24 18 113Grand Total 48 55 55 65 46 269

Overview Most Fatal Collisions

happened on State Routes followed by County Roads.

In 2009 we saw a 29.3% decrease in fatal collisions (19 incidents).

269 Fatal Collisions resulted in 287 deaths.

FATAL COLLISIONS—PIERCE COUNTY

Source: FARS


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 2009 . 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.

As the project continues, Zones will be monitored for changes in behavior, times,

and monitored activity within and surrounding the Zones.

DUI ZONE IDENTIFICATION

ZONES

For larger view see page 7.

Baseline Data

Total Fatal Collisions and Total Fatal DUI‐Related Collisions

(2005‐2009, FARS Data)

Citizen Reports of Possible DUI, Erratically Driven Vehicles, and Wrong‐Way Drivers

(2007‐2009, 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 po‐lice reported alcohol involvement or positive drug test.


PIERCE COUNTY: FATAL DUI COLLISION ZONE IDENTIFICATION

ZONES

Zone Name Characteristics

Number of

Fatal

Impaired

Driver

Collisions

Number of

People Killed

in Impaired

Driver

Collisions

Tacoma Zone

Fatal Crashes: Fatal impaired collisions occurred primarily between midnight

and 3am. Of these collisions, 5 of the 7 occurred between Monday through

Thursday. No fatal collisions occurred on Fridays in this zone. Eight of the 16

fatal collisions occurred on Mondays or Tuesdays. No impaired pedestrians

were noted in the zone, and there was one stolen vehicle involved.

Citizen Reports: Within this zone, there were 4,373 citizen reports of

possible DUI , wrong way vehicles or erratically driven vehicles to WSP (2007‐

2009) via 911. The calls peaked on Fridays and Saturdays. The highest spikes

by day and hour were on Saturdays at 2pm, 5pm, and 9pm.

16 18

Puyallup Zone

Fatal Crashes: Zone fatal collision activity mostly occurred between midnight

and 3am, with 9 of 15 crashes occurring during this time. Activity appeared

to be scattered throughout the week, however, classic Saturday‐Sunday

activity during the peak times is noted. A secondary "afternoon" pattern is

evident in the area, with 4 collisions occurring between noon and 4pm, and

two at 7pm. 12 of the 15 collisions occurred in 2008 and 2009, and one hit‐

and‐run was noted.

Citizen Reports: Within this zone, there were additionally 5,046 citizen

reports of possible DUI , wrong way vehicles or erratically driven vehicles to

WSP via 911 (2007‐2009). The calls peaked on Saturdays around 9pm,

followed by Fridays around 10pm.

15 18

Lakewood Zone

Fatal Crashes: Recent impaired driving fatal collisions occurred in this area in

2008 and 2009. Two of the three collisions occurred between 2am and 4am,

but no pattern could be distinguished with day of week. Two of the three

collisions occurred between milepost 124 and milepost 125 on I‐5, and all

three involved speed.

Citizen Reports: Between 2007 and 2009, there were 1,567 citizen reports

of possible DUI , wrong way vehicles or erratically driven vehicles to WSP via

911 in this zone. The calls peaked on Fridays, Saturdays, and Sundays

between 4pm and 7pm.

3 3

Fife Zone

Fatal Crashes: Two of the three fatal impaired collisions occurred between

7am and 9am, 1 occurred on a Friday, and 2 on a Sunday. Two of the three

collisions occurred between milepost 137 and 139 on I‐5. The most recent

fatality that occurred in this area was in 2007.

Citizens Reports: Between 2007 and 2009, there were 2,055 citizen reports

of possible DUI , wrong way vehicles or erratically driven vehicles to WSP via

911 in this zone. The calls peaked on Friday nights around 10 pm and

Saturday nights around 11pm.

3 3


PIERCE COUNTY: FATAL DUI COLLISION ZONE IDENTIFICATION

ZONES


PIERCE COUNTY: TACOMA ZONE

ZONES


PIERCE COUNTY: PUYALLUP ZONE

ZONES


PIERCE COUNTY: LAKEWOOD ZONE

ZONES


PIERCE COUNTY: FIFE ZONE

ZONES


PIERCE COUNTY BASELINE: IMPAIRED FATAL COLLISIONS, 2005‐2009

Impaired Fatal Collisions by Day of Week and Time of Day With Daily and Hourly Index, 2005‐2009

Overview

Out of 269 Fatal Collisions, 143 (46%) were Impaired Fatal Collisions.

Between 2005 to 2009, number

of Impaired Fatal Collisions increased by 36.4%.

Most fatal collisions between

2005 and 2009 occurred in August.

Overview Three Impaired

Fatal Collisions involved a pedestrian.

The highest number

of Impaired Fatal Collisions happened on Sundays followed by Saturdays and Tuesdays.

The highest number

of Impaired Fatal Collisions occurred between 1am and 2am, and at 11pm.

Impaired Fatal Collisions by Month and Year, 2005‐2009

HOUR Sun Mon Tue Wed Thur Fri Sat TotalHourly

Index00 4 1 0 0 0 2 2 9 1.5101 5 3 2 2 2 1 5 20 3.3602 8 1 2 0 2 0 5 18 3.0203 3 0 2 1 0 0 0 6 1.0104 1 0 2 1 0 0 0 4 0.6705 1 0 1 0 2 0 0 4 0.6706 0 0 0 1 1 0 1 3 0.5007 0 0 0 0 0 1 1 2 0.3408 1 0 0 0 0 0 0 1 0.1709 0 0 1 0 0 1 0 2 0.3410 2 0 0 0 0 0 0 2 0.3411 0 0 0 0 0 0 0 0 0.0012 1 0 2 1 1 0 0 5 0.8413 0 2 1 0 0 0 0 3 0.5014 0 1 1 0 0 0 2 4 0.6715 0 0 0 0 1 3 0 4 0.6716 1 0 2 1 1 2 1 8 1.3417 1 1 1 0 0 1 1 5 0.8418 3 1 1 1 1 0 2 9 1.5119 0 1 2 1 1 0 1 6 1.0120 0 3 0 1 1 1 0 6 1.0121 0 0 2 0 0 2 2 6 1.0122 0 1 0 0 1 3 1 6 1.0123 3 1 0 1 3 2 0 10 1.68

Total 34 16 22 11 17 19 24 143Daily

Index1.66 0.78 1.08 0.54 0.83 0.93 1.17

* An index of >1 is considered above average

BASELIN

E


PIERCE COUNTY: IMPAIRED FATAL COLLISIONS, 2005‐2009

BASELIN

E


* An index of >1 is considered above average

PIERCE COUNTY BASELINE:

CITIZEN REPORTS OF POSSIBLE DUI, 2007‐2009

Citizen Reports of Possible DUI by Time of Day and Day of Week with Hourly Index, 2007‐2009

Overview Possible DUI Citizen Reports

decreased by 875 calls in Pierce County between 2008 and 2009, for a decrease of 5.5%.

Possible DUI Citizen Reports

averaged 41 calls per day in 2009.

May through July had the

highest number of calls for possible DUIs or erratically driven vehicles.

Overview Citizen Reports chart by Day of Week and Time of Day indicates days with the highest possible DUIs are: Saturday followed by Friday and Thursday. The Time of Day for the possible DUIs indicate night hours, between 10pm and 1am, have the highest number.

Baseline Citizen Reports of Possible DUI Data by Month and Year with Seasonal Index, 2007‐2009

2007 2008 2009 Total Mean Index

Jan 1137 1201 1108 3446 1148.67 0.85

Feb 1164 1321 1157 3642 1214.00 0.90

Mar 1375 1472 1181 4028 1342.67 0.99

Apr 1492 1288 1245 4025 1341.67 0.99

May 1692 1624 1355 4671 1557.00 1.15

Jun 1740 1455 1396 4591 1530.33 1.13

Jul 1704 1464 1413 4581 1527.00 1.13

Aug 1702 1486 1334 4522 1507.33 1.12

Sept 1586 1270 1307 4163 1387.67 1.03

Oct 1484 1198 1173 3855 1285.00 0.95

Nov 1476 1117 1071 3664 1221.33 0.90

Dec 1391 880 1161 3432 1144.00 0.85

Total 17943 15776 14901 48620

Hour/Day Sun Mon Tue Wed Thu Fri Sat Total Mean Index

0 86 6 8 14 28 39 74 255 36.43 1.63

1 62 2 2 11 22 26 74 199 28.43 1.27

2 44 7 3 9 23 26 71 183 26.14 1.17

3 26 2 1 5 11 16 28 89 12.71 0.57

4 20 3 1 7 12 15 27 85 12.14 0.54

5 8 7 8 23 25 15 11 97 13.86 0.62

6 3 7 22 18 28 19 11 108 15.43 0.69

7 9 15 18 14 22 24 17 119 17.00 0.76

8 6 5 14 14 21 18 17 95 13.57 0.61

9 15 8 9 21 18 23 29 123 17.57 0.78

10 18 10 20 26 24 37 24 159 22.71 1.01

11 14 18 24 31 26 33 25 171 24.43 1.09

12 19 11 16 18 19 19 39 141 20.14 0.90

13 16 17 20 27 15 36 31 162 23.14 1.03

14 14 14 12 21 17 23 12 113 16.14 0.72

15 15 10 18 17 14 18 15 107 15.29 0.68

16 12 12 15 14 14 18 15 100 14.29 0.64

17 20 16 28 13 19 22 23 141 20.14 0.90

18 16 19 18 21 29 34 28 165 23.57 1.05

19 8 10 20 14 31 39 32 154 22.00 0.98

20 12 17 15 27 24 27 41 163 23.29 1.04

21 14 17 15 25 30 44 41 186 26.57 1.19

22 22 15 27 37 61 92 90 344 49.14 2.19

23 16 2 25 35 49 78 102 307 43.86 1.96

Total 495 250 359 462 582 741 877 3766

Note: Data reflects only spatial records.

Note: Data reflects only spatial records.

BASELIN

E


PIERCE COUNTY: CITIZEN REPORTS OF POSSIBLE DUI, 2007‐2009

BASELIN

E


This page was left blank intentionally.


PIERCE COUNTY BASELINE: CRIME DATA

Crime—Uniform Crime Report 2006-2008

Source: (Office of Financial Management, 2009)

The tables below represent information for Pierce County for the years of 2006 through 2008. Each table represents a dif‐ferent aspect of the Uniform Crime Report. As a result, the totals in each table will not match because they represent num‐ber of crimes, number of subjects arrested, and number of court cases.

Reported Index Crimes:

Number of reported crimes in 2008 had increased by one from the previous year.

2007 reported crimes decreased by 8.6% from the year 2006.

Over the period of three years, number of reported crimes had decreased by 8733, which is 20.2%.

Number of total arrests:

Arrests in 2008 had increased by 3.4% from 2007.

Arrests in 2007 had increased by 14.8%.

Over the period of three years, num‐ber of arrested adults had increased by 18.7%.

Superior Court Filing: Number of filled court cases in 2008

decreased by 7.4%.

Number of court cases in 2007 increased by 3.6% over 2006.

Over the period of three years, superior court fillings decreased by 4%.

BASELIN

E


PIERCE COUNTY BASELINE: CRIME DATA

BASELIN

E


PIERCE COUNTY BASELINE: CRIME DATA—LInX

Source: LinX, March 2010

277

367

405

427

351

336 333

Sun Mon Tue Wed Thu Fri Sat

Number of Arrests per Day of Week

442

900

505448

159

29 9

11 to 20 21 to 30 31 to 40 41 to 50 51 to 60 61 to 70 70+

Arrests per Age

BASELIN

E


This page was left blank intentionally.


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 com‐parisons and detection of movement through time and space across zones.

Kernel Density Kernel Density calculates the density of a group of features (collisions, calls for service, arrest locations, etc.) around a spe‐cific 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.

Fatal Collisions FARS/WSDOT Merged Data Set, 2005‐2009

2522 Spatial Features/ 2622 Total Records 96.1% of the Total Records (2622) are mapped

APPENDIX: METHODOLOGY

METH

ODOLO

GY

Documents

TARGET ZERO TEAM PROJECT DUI ZONE ...komonews.s3.amazonaws.com/101101_dui_pierce.pdfPierce County is the second most populous county in Washington state. According to the U.S. Census