Table of Contents - Phoenix, ArizonaFrom an education standpoint, the percentages of run red...

2011 Phoenix Traffic Collision Summary Table of Contents

Introduction i 2011 Phoenix Traffic Collision Facts at a Glance ii Number/Severity of Collisions Annual Collisions 2002 – 2011 1 Collisions vs. Population 2002 - 2011 1 Injury Collisions 2002 - 2011 2 Fatal Collisions 2002 - 2011 2 Phoenix vs. Arizona Collisions 3 When do Collisions Occur? Total Collisions, Injuries, and Fatalities by Month for 2011 4 Collisions by Day of Week 5 Collisions by Time of Day 5 Collision Severity by Light Conditions 6 How do Collisions Occur?

Collision Type – All Collisions 2011 7 Collision Type by Severity 2011 7 Fatal Collisions by Mode of Transportation 2011 8 Collision Type by Driver Age Group 2011 8 Collisions by Primary Violation 2011 9 Fatal Collisions by Mode 2007 - 2011 9 Total Motorcyclist, Injuries, and Fatalities 2007 - 2011 10 Motorcyclist Injury Severity and Helmet Usage 10 Light Rail Related Collisions 2011 11 Alcohol-Related Collisions, Injuries, and Fatalities 2007 – 2011 12 Work Zone Collisions, Injuries, and Fatalities 2007 - 2011 13 Run-Red Collisions, Injuries, and Fatalities 2007 – 2011 14 Run STOP Sign Collisions, Injuries, and Fatalities 2007 – 2011 15

Pedestrian Collisions Pedestrian Collisions, Injuries, and Fatalities 2007– 2011 16 Pedestrian Collisions by Hour and Month 17 Factors in Pedestrian Collisions: Pedestrian Behavior 18 Factors in Pedestrian Collisions: Motorist Behavior 19 Age and Gender of Pedestrians in Collisions 20

Bicycle Collisions Bicycle Collisions, Injuries, and Fatalities 2007 – 2011 21 Bicycle Collisions by Hour and Month 22 Factors in Bicycle Collisions: Bicyclist Behavior 23 Factors in Bicycle Collisions: Motorist Behavior 24 Age and Gender of Bicyclists in Collisions 25

Locations with the Highest Number of Collisions 26 Locations with the Highest Number of Run-Red Collisions 27 Locations with the Highest Number of Ran STOP Sign Collisions 28 Phoenix Traffic Clock 29 Additional Information 30

2011 Phoenix Traffic Collision Summary

Street Transportation Department Traffic Services Division Page i

Safety and Neighborhood Traffic Section

Introduction As motorists, cyclists and pedestrians, we share responsibilities for the safe movement of

people and goods on city streets. Understanding the factors related to traffic crashes

can help our efforts to improve traffic safety. This report summarizes traffic crash history

for the 2011 calendar year but more than just historical facts the report also tells us how

well people travel safely on city streets. Traffic crashes continue to happen with property

damaged and people injured or killed as a result.

Looking back on 2011, Phoenix saw the second lowest number of traffic crashes in over

20 years. The 22,637 crashes reported in 2011, are 2.7% increased over 2010 which saw

the lowest number of crashes in over 20 years. Phoenix traffic crashes are tied to traffic

volumes which closely follow the state economy. Small economic improvements in 2011

have lead to higher levels of traffic activity and increased risk for collisions.

The number of crashes that resulted in injuries also increased slightly in 2011 and the total

number of people injured increased from 12,143 in 2010 to 12,315 in 2011. Fatal collisions

remained flat at 108 and the number of people killed in those collisions declined from 121

in 2010 to 110 in 2011. Crashes involving motorcycles increased from 495 in 2010 to 573 in

2011 with increases in the number of injuries and the number of fatalities from these

crashes. Crashes involving METRO light rail which saw its third complete year of

operations in 2011 increased from 18 in 2010 to 20 in 2011 including one crash with a

pedestrian. Pedestrians accounted for less than 1/3 of all fatalities with 34 pedestrians

killed during 2011 which is a decrease from pedestrian fatalities in 2010. Unfortunately,

crashes involving bicycles increased in 2011 as did the number of bicyclists injured and

killed during the year.

From an education standpoint, the percentages of run red collisions in 2011 declined

slightly from 2010 at 7.4% of all crashes and the percentage of run stop sign crashes

declined as well for the third year in a row to just over one percent of all crashes. Alcohol

related crashes also declined for the third year in a row to 5.5% of all crashes but alcohol

was a factor in at least 36 fatalities or about a third of all fatal crashes.

We take seriously the human and property damages of individual traffic crashes. Safety

advocates in Phoenix and across the country look to the tragedy of individual crashes to

try to make traveling safer for everyone. This Traffic Collision Summary is part of that

effort.


Street Transportation Department Traffic Services Division Page ii

Safety and Neighborhood Traffic Section

2011 Phoenix Traffic Collision Facts-at-a-Glance Overall Crashes

Approximately 34 people were injured every day in 2011 as a result of traffic crashes.

Almost 2/3 of all collisions resulted in property damage only. About 27 percent of all collisions occurred between the hours of 3 pm to 6 pm

but only 17 percent of the traffic fatalities occurred during those times. Over 61 percent of fatal crashes occurred during night or twilight hours.

Drivers In 18 percent of all crashes, the at fault driver was between 14 to 21 years of age.

These crashes include 9 fatal and 112 serious injury crashes. From the above crashes, five fatal and 11 serious injury collisions were caused by

young drivers under the influence of alcohol. In just over seven percent of all crashes, the at fault driver was 65 years of age or

older. These crashes include 9 fatal and 74 serious injury crashes.

Light Rail In 2011 there were 20 collisions involving a light rail vehicle. Seventy percent of

these collisions involved vehicles turning in violation of a red arrow and most of these were left turns.

Pedestrians There were 34 pedestrian fatalities and 460 were injured in collisions with motor

vehicles, which is 11 fewer fatalities and 15 more injuries than in 2010. 26 percent of the collisions involved the pedestrian not using the crosswalk.

Bicyclists There were ten bicyclist fatalities and 441 were injured in collisions between

bicycles and motor vehicles, which is two more fatalities and 34 more injuries than in 2010.

Alcohol/Drug-Related 36 people were killed in alcohol-related collisions in 2011 which is seven less than

in 2010. One third of the fatal crashes involved one or more drivers, pedestrians or

bicyclists who had been drinking prior to the crash. 31 percent fatal alcohol-related pedestrian collisions involved a pedestrian being

under the influence of drugs or alcohol.

Red Light Running and Other Failure-to-Yield 13 people were killed, and 1,545 were injured in collisions where at least one

vehicle ran a red light 2011. 232 crashes resulted from vehicles running STOP signs, resulting in the death of

one person and injuring 137 others.


Street Transportation Department Traffic Services Division Page 1

Traffic Safety Section

Annual Collisions 2002 - 2011

33.131.6 32.0

33.7 32.8

26.2

22.7 21.9 22.6

35.2

0

5

10

15

20

25

30

35

40

02 03 04 05 06 07 08 09 10 11Year

Col

lisio

ns (x

1000

)

22,6

37 C

ollis

ions

Collisions vs. Population 2002 - 2011

24.222.6 23.6

16.714.3 15.715.2

21.222.722.8

0

5

10

15

20

25

30

02 03 04 05 06 07 08 09 10 11YearC

ollis

ions

per

Thou

sand

Res

iden

ts




Injury Collisions 2002 - 2011

13.512.7 12.7 12.4

10.8

8.87.9 7.7

12.2

7.8

0

2

4

6

8

10

12

14

16

02 03 04 05 06 07 08 09 10 11

Year

Col

lisio

ns (x

1000

)

12,3

15 In

jurie

s

Fatal Collisions 2002 - 2011 191

155 157166

153135

123108 108

181

0

50

100

150

200

02 03 04 05 06 07 08 09 10 11

Year

Col

lisio

ns

110

Fata

litie

s




Phoenix vs. Arizona Total Collisions

106.7 106.1 103.4

32.8 26.2 22.7 21.9 22.6

140.4

119.6

0

20

40

60

80

100

120

140

160

07 08 09 10 11

Year

Col

lisio

ns (x

1000

)

Phoenix vs. Arizona Total Injury Collisions

37.233.4 33.2

10.8 8.8 7.9 7.7 7.8

33.0

45.1

0

10

20

30

40

50

07 08 09 10 11Year

Col

lisio

ns (x

1000

)

Phoenix vs. Arizona Total Fatal Collisions

842709 698

153 135 123 108 108

754

1124

0

200

400

600

800

1000

1200

07 08 09 10 11

Year

Col

lisio

ns

Arizona

Phoenix

Arizona

Phoenix

Arizona

Phoenix




Total Collisions, Injuries, and Fatalities by Month

1825 19072093 2030

18581751

16051877 1919 1984

17981990

0

500

1000

1500

2000

2500

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

Col

lisio

ns

885995

11971134

1033 980

805

1021 1077 1123980

1085

0

200

400

600

800

1000

1200

1400


Inju

ries

10

13

9

46 6

97

5

16

1312

02468

1012141618


Fata

litie

s

Note: Blue Column is the High for 2011




Collisions by Day of Week

1904

33413533 3633

3465

3918

2843

0

500

1000

1500

2000

2500

3000

3500

4000

4500

SUN MON TUE WED THU FRI SAT

Col

lisio

ns

981

Inju

ries

18 F

ata

litie

s

1767

Inju

ries

16 F

ata

litie

s

1960

Inju

ries

15 F

ata

litie

s

2116

Inju

ries

8 Fa

talit

ies

1961

Inju

ries

13 F

ata

litie

s

1489

Inju

ries

22 F

ata

litie

s

2041

Inju

ries

18 F

ata

litie

s

Collisions by Time of Day

648

33602974

4357

3048

1469

691

0

1000

2000

3000

4000

5000

6000

12am -3am

3am -6am

6am -9am

9am -12pm

12pm -3pm

3pm -6pm

6pm -9pm

9pm -12am

Col

lisio

ns

1732

Inju

ries

7 Fa

talit

ies

2442

Inju

ries

11 F

ata

litie

s

1844

Inju

ries

8 Fa

talit

ies

3086

Inju

ries

19 F

ata

litie

s

1808

Inju

ries

23 F

ata

litie

s

801

Inju

ries

13 F

ata

litie

s

274

Inju

ries

17 F

ata

litie

s

328

Inju

ries

12 F

ata

litie

s

6090

Note: Blue Column is the High for 2011




Collision Severity by Light Conditions

25.5% 25.5%

74.5% 74.5%

61.1%

38.9%

0%

10%

20%

30%

40%

50%

60%

70%

80%

Day Night*

Non-Injury Crashes Injury Crashes Fatal Crashes

42 C

ollis

ions

5,83

9 C

ollis

ions

3,74

8 C

ollis

ions

66 C

ollis

ions

1,99

9 C

ollis

ions

10,9

43 C

ollis

ions

*Crashes at dawn or dusk have been combined into night crashes.




Collision Type – All Collisions

Left Turn19%

1 Vehicle12%

Other2%

Ped2%

Bike2%

Sideswipe12%

Angle20%

Rear End31%

Collision Type by Severity

Injury Collisions Fatal Collisions

Left Turn23%

Angle22%

Bike6%

1 Vehicle8%

Rear End29%

Sideswipe5%

Other2%

Ped5%

z

Angle19%

1 Vehicle19%

Left Turn10%

Bike 9%

Head On5%

Sideswipe4%

Rear End3%

Pedestrian31%

z




Fatal Collisions by Mode of Transportation

Vehicle - Vehicle(26 crashes)

24%

Vehicle - Motorcycle(18 crashes)

17%

Single Vehicle (13 crashes)

12%

Single Motorcycle(7 crashes)

6%Vehicle - Bicycle(10 crashes)

9%Vehicle -

Pedestrian(34 crashes)

32%

Collision Type by Driver Age Group Young Drivers

(25 and Younger)

Other2%Sideswipe

11%

Left Turn24%

Rear End39%

Angle 24%

Older Drivers(Age 56 - Up)

Left Turn26%

Sideswipe16%

Other3%

Angle28%

Rear End27%

Only the drivers of Unit 1, with known ages, in all vehicle collisions were used for these charts (Collisions involving pedestrians, bicyclists or single vehicles are NOT included)




Collisions by Primary Violation

Disregarded Signal 8%

Ran STOPSign 1%

Unsafe Lane Change 5%

Unk. 7%

ImproperTurn 8%

Other2 11% Inattention 14%

Speed TooFast1 23%

Failed toYield 14%

Drove Opposing Traffic 2%None

3%Followed Too

Close 4%

Unit 1 is usually reported at fault. Only the first violation for unit 1 is used in this chart.

1 – “Speed Too Fast” does not necessarily mean the person was exceeding the speed limit but rather the person was traveling too fast for the conditions at the time.

2 – “Other” includes less common violation such as Unsafe Passing and Operating with Faulty Equipment.

3 – “None” refers to drivers involved in a crash without committing a violation. These instances are usually the result of uncontrollable forces such as falling debris or animals in the roadway.

Fatal Collisions by Mode 2007 – 2011* Vehicle – Pedestrian Vehicle – Bicycle Vehicle – Motorcycle Vehicle - Vehicle

43 4136

46

34

6 6 9 8 10

23 22 22

11 10

3932

41

87

38

0102030405060708090

100

2007 2008 2009 2010 2011

Year

Fata

l Col

lisio

ns

*The graph does not include single-vehicle fatal collisions




Total Motorcyclists, Injuries, and Fatalities 2007 - 2011

591 607

506 495

573

050

100150200250300350400450500550600650

2007 2008 2009 2010 2011

Year

Mot

orcy

clist

s

464

Inju

ries

32 F

ata

litie

s

480

Inju

ries

23 F

ata

litie

s

550

Inju

ries

23 F

ata

litie

s

571

Inju

ries

29 F

ata

litie

s

413

Inju

ries

19 F

ata

litie

s

Motorcyclist Injury Severity and Helmet Usage

33

207

1120

149

1117

124

10

20406080

100120140160180200220240

No Injury Injury Fatal

Mot

orcy

clist

s

Helmet No Helmet Not Reported

223252

195 194

251

0

50

100

150

200

250

300

2007 2008 2009 2010 2011

Ride

rs w

ith H

elm

et




Light Rail Transit (LRT) Related Collisions 2011

1

12

112

3

0

2

4

6

8

10

12

Right Turn Left Turn Thru Other

Vehicle Movement in LRT Collisions

Co

llisio

ns

No Injury Injury 20* Total LRT Crashes in 2011

*There was 1 light rail vehicle crash with a pedestrian.




Alcohol-Related Collisions, Injuries, and Fatalities 2007–2011

6.0% 5.7% 5.5%5.8%5.7%

0.0%

2.0%

4.0%

6.0%

8.0%

2007 2008 2009 2010 2011

Year

Col

lisio

ns

7.9%7.0% 6.5%

8.0%7.7%

0.0%

2.0%

4.0%

6.0%

8.0%

10.0%

2007 2008 2009 2010 2011

Year

Inju

ries

39.7%35.5%

32.7%

49.4%

39.9%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

2007 2008 2009 2010 2011

Year

Fata

litie

s

These graphs represent the percentage of alcohol-related crashes, injuries and fatalities in relation to the total number of crashes, injuries and fatalities. “Alcohol-Related” may not mean that the operator was legally drunk.

1236

Col

lisio

ns

804

Inju

ries

36 F

ata

litie

s




Work Zone Collisions, Injuries, and Fatalities 2007 – 2011

1409

836

305 291256

0

300

600

900

1200

1500

07 08 09 10 11

Year

Col

lisio

ns

309

Inju

ries

1 Fa

talit

y

112

Inju

ries

1 Fa

talit

ies

117

Inju

ries

0 Fa

talit

ies

132

Inju

ries

0 Fa

talit

ies

578

Inju

ries

1 Fa

talit

y




Run-Red Collisions, Injuries, and Fatalities 2007 – 2011* 2155

1729 1733 1677 1668

0

400

800

1200

1600

2000

2007 2008 2009 2010 2011

Year

Col

lisio

ns

1941

1601 16381524 1545

0

400

800

1200

1600

2000

2007 2008 2009 2010 2011

Year

Inju

ries

14 14

17

7

13

0

5

10

15

20

2007 2008 2009 2010 2011

Year

Fata

litie

s

* Only collisions in which a motorist committed the violation are included.




Run STOP Sign Collisions, Injuries, and Fatalities 2007 – 2011*

355

291 304272

232

0

100

200

300

400

2007 2008 2009 2010 2011

Year

Col

lisio

ns

248223 228

200

137

0

75

150

225

300

2007 2008 2009 2010 2011

Year

Inju

ries

1

4

2

1 1

0

1

2

3

4

5

2007 2008 2009 2010 2011

Year

Fata

litie

s

*Only collisions in which a motorist committed the violation are included.




Pedestrian Collisions, Injuries, and Fatalities 2007 - 2011

42 4136

4534

0

20

40

60

80

2007 2008 2009 2010 2011

Year

Fata

litie

s

569 555492

445 460

0

200

400

600

800

2007 2008 2009 2010 2011Year

Inju

ries

624 589525 486 521

0

200

400

600

800

2007 2008 2009 2010 2011Year

Col

lisio

ns




Pedestrian Collisions by Hour

Pedestrian Collisions by Month

Note: Blue Column is Highest Month in 211

42

35 3632

20

52

38

5157

51

40

67

0

10

20

30

40

50

60

70


Month

Col

lisio

ns

19 13

80

46

72

109

50

132

0

20

40

60

80

100

120

14012

am

-3a

m

3am

-6a

m

6am

-9a

m

9am

-12

pm

12p

m -

3pm

3pm

-6p

m

6pm

-9p

m

9pm

-12

am

Time

Col

lisio

ns




Factors in Pedestrian Collisions: Pedestrian Behavior

* The “Other” option is reported on a collision report form when none of the options accurately describe the attributes of the collision.

Violation by Pedestrian

Physical Condition of Pedestrian

Action of Pedestrian

Other11%

Did Not Use Xwalk 26%

None39%

Unk. 7%

Failed to Yield 4%

Inattention 7%


No Impairment

72%

Unknown10%

Had Been Drinking

13%

Other 5%

Crossing Road59%

Other 8%

Standing4%

Going Straight16%

Walking Against Traffic

4%

Unknown 6%

Walking WithTraffic 3%




Factors in Pedestrian Collisions: Motorist Behavior

Physical Condition of Motorist

Action of Motorist

Violation by Motorist

Inattention14%

No Violation45%

Failed to Yield 15%

Speed TooFast 4%


Other 9%

Unknown11%

Unknown18%

Had Been Drinking 3%

Other 3%

No Impairment

76%

Going Straight60%Turning Right

15%

Other 6%

Turning Left16%

Unknown 3%




1722

35

49 47 48 50

3425

11

16

47

34

28 2627

20

1528

38

777475

8382

54

40

2

0

20

40

60

80

100

120

140

Up

to 5

6 -1

1

12 -

17

18 -

25

26 -

35

36 -

45

46 -

55

56 -

65

66 -

Up

Unk

now

n

Age

Col

lisio

ns

No Inj.

2441

65Male

FemaleInjury

187267

454

Fatal

1321

34

Total*

224329

553Total*6 addit ional peds w ith unknow n information

Age and Gender of Pedestrians in Collisions

Children below 18 years of age account for 23% of all pedestrian crash victims




Bicycle Collisions, Injuries, and Fatalities 2007 - 2011

440478 467 455

491

0

150

300

450

600

2007 2008 2009 2010 2011Year

Col

lisio

ns

407 432 436 407441

0

150

300

450

600

2007 2008 2009 2010 2011

Year

Inju

ries

6 6

98

10

0

3

6

9

12

2007 2008 2009 2010 2011

Year

Fata

litie

s




Bicycle Collisions by Hour

4 9

66

98

139

23

8568

0

20

40

60

80

100

120

140

160

12a

m -

3am

3am

-6a

m

6am

-9a

m

9am

-12

pm

12p

m -

3pm

3pm

-6p

m

6pm

-9p

m

9pm

-12

am

Time

Col

lisio

ns

Bicycle Collisions by Month

37

28

39

53

4036

31

50

56

40 3844

0

10

20

30

40

50

60


Month

Col

lisio

ns

Note: Blue Column is Highest Month in 2011




No Violation28%

Unknown8%

Other 25%Drove in Opp. Lane 15%

Failed toYield 8%

Inattention8%


Factors in Bicycle Collisions: Bicyclist Behavior

Physical Condition of Bicyclist

Violation by Bicyclist

Action of Bicyclist

Other 2%Had BeenDrinking 4%

Unknown6%

Not Impaired88%

Going Straight74%

Crossing Road14%

Other 7%

Unknown 3%Turning 2%




Factors in Bicycle Collisions: Motorist Behavior

Violation by Motorist

Physical Condition of Motorist

Action of Motorist

Turning Left11%

Other11% Unknown 2%

Going Straight39%

Turning Right37%

Inattention11%

Failed to Yield10%

Speed Too Fast2%

Other 11%

Unknown10%


No Violation 54%

No Unusual Condition

86%

Unknown 13%

Had Been Drinking 1%




2

12

54

67

53

60

85

38

104

4

19

19

21

14

16

4

24

0

20

40

60

80

100

Up

to 5

6 -1

1

12 -

17

18 -

25

26 -

35

36 -

45

46 -

55

56 -

65

66 -

Up

Unk

now

n

Age

Col

lisio

ns

No Inj.

536

41

Male

FemaleInjury

97340

437

Fatal

19

10

Total

103385

488Total

Age and Gender of Bicyclists in Collisions

Children below 18 years of age account for almost 22% of all bicycle crash victims




Locations with the Highest Number of Collisions Typically, intersections with the highest traffic volumes experience the most collisions. Since the listing does not account for severity, the diagram should not be interpreted to represent intersections of most concern from a safety standpoint. Criteria used to select these locations include all collisions in 2011 within 150 feet of an intersection. Freeway interchanges and signalized driveways are NOT included in this map.




Locations with the Highest Number of Run-Red Collisions Typically, intersections with the highest traffic volumes experience the most collisions. Since the listing does not account for severity, the diagram should not be interpreted to represent intersections of most concern from a safety standpoint.

Criteria used to select these locations include all collisions in 2011 occurring within 150 feet of the intersection that resulted from a “Disregarded Traffic Signal” violation by a motorist. Freeway interchanges and signalized driveways are NOT included in this map.




Locations with the Highest Number of Ran STOP Sign Collisions Typically, intersections with the highest traffic volumes experience the most collisions. Since the listing does not account for severity, the diagram should not be interpreted to represent intersections of most concern from a safety standpoint.

Criteria used to select these locations include all collisions in 2011 occurring within 150 feet of the intersection that resulted from a “Ran STOP Sign” violation by a motorist.




Phoenix Traffic Clock




Additional Information The 2011 Phoenix Traffic Collision Summary is the annual report of traffic collision statistics from the City of Phoenix. Data used to produce this document were obtained from the Arizona Department of Transportation’s Safety Data Mart (SDM). SDM includes all collisions investigated under Arizona Revised Statutes 28-667 involving motor vehicles on city streets that involve injuries, fatalities, damage to private property in excess of $1,000, or issuance of a citation. Collisions that occur on the freeway system or private property are not included in this report. SDM data may not match statistics reported by other sources. For more information or to receive this document in an alternative format, please call the Street Transportation Department at 602-262-6284 or TTY 602-256-6284.

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