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Data Analysis: Arizona Crashes & Driving Under the Influence

Posted on March 16, 2022 in Car Accident,Drunk Driving,DUI

Some motor vehicle crashes and collisions are unfortunately not preventable, even when drivers exercise due caution and drive defensively. Undetectable road or weather conditions, the actions of other drivers, and mechanical failures can cause sudden and unexpected problems. However, many crashes can be avoided, particularly those where one or more motorist is driving under the influence (DUI).

Arizona Crash & DUI Accident Resources

To immediately jump to the resources at any point on this page, please click the appropriate link below.

What is DUI in Arizona?
What Factors Caused or Influenced Arizona Car Crashes in 2020?
DUI Motorcycle Accidents in Arizona
Tracking Alcohol-Related Crashes from 2016-2020
Alcohol-Related Crashes by Vehicle Type
What Were the Damages of Alcohol-Related Crashes in 2020?
Alcohol-Related Crashes by Arizona County
Arizona DUI Task Force Statistics, 2015-2020 (Holidays)
Annual Arizona DUI Task Force Statistics, 2015-2019
How Much Does the Arizona Highway Safety Program Spend on Impaired Driving?

What is Driving Under the Influence in Arizona?

Per Arizona Revised Statute (ARS) 28-1381, it is unlawful for any person under the influence of any drugs or intoxicating liquor to drive or be in “actual physical control” of a vehicle. Actual physical control encapsulates a number of factors meant to determine whether a motorist’s imminent or current actions pose a threat to themselves or others. Some of the criteria used to judge whether a driver was in actual physical control are: whether the vehicle was running, where the ignition key was located, whether the person was awake or asleep, and where the vehicle was stopped.

There are multiple types of DUI in Arizona, all of which can potentially lead to jail time and the suspension of driving privileges. Depending on the extenuating circumstances, a driver may be charged with:

  • DUI: The classification of DUI applies to a driver with an alcohol concentration of 0.08 or higher, or 0.04 for the driver of a commercial vehicle requiring a commercial license.
  • Extreme DUI: An extreme DUI applies to a driver with an alcohol concentration of 0.15 or higher.
  • Aggravated DUI: If a driver commits a DUI while their license is cancelled, revoked, or suspended; commits a DUI with a person under the age of fifteen in the vehicle; commits a third DUI in 84 months; or refuses to submit a blood alcohol test while under an ignition interlock device requirement, they may be charged with aggravated DUI.

What Factors Potentially Influenced Arizona Motor Vehicle Crashes in 2020?

In 2020, investigations into 161,919 of Arizona’s 189,672 annual motor vehicle accidents determined that the driver(s) involved were under “no apparent influence.” For an additional 19,576 drivers, it was not determined whether they were influenced by any physical or mental factors. The breakdown of the remaining 8,177 drivers, where the motorist was confirmed to be under some form of influence, is in the graph below.

Arizona Drivers Under the Influence - Chart

Tracking the Causes for Arizona Motorcycle Crashes

In addition to breaking down the physical status and state of mind of drivers involved in Arizona motor vehicle crashes in 2020, we dug into similar statistics for motorcyclists. Similar to drivers, most motorcyclists were either under no apparent influence (1,905) or the circumstances of the crash were unknown (316). However, 152 of 2,373 bikers were found to have been influenced by a substance or physical ailment at the site of a crash. 40 fatalities occurred from these 153 instances. The graph below details the number of motorcyclists impacted by a particular condition in the direct aftermath of a crash.

Motorcyclists Under the Influence - Chart

Tracking Alcohol-Involved Crashes in Arizona from 2016 – 2020

A significant number of drivers and motorcyclists under the influence in Arizona in 2020 were affected by alcohol in their system. We reviewed data on alcohol-influenced crashes in the state over a five-year period from 2016-2020. From 2019 to 2020, the total number of alcohol related crashes decreased by 438 and the number of connected deaths went down by 77. However, alcohol-related accidents made up 4.56% of all Arizona crashes in 2020, which marked a 0.77% increase from 2019.

Data is from the AZDOT and involves crashes where the investigating officer indicated that a driver had been drinking an alcoholic beverage. No assumption should be made the motorist was legally intoxicated (BAC of .08 or higher) at the time of the crash.

Year Alcohol Related Crashes Percent of Crashes Deaths Percent of Fatalities Injuries Percent of Injuries
2016 4,965 3.90% 302 31.72% 3,351 5.88%
2017 4,921 3.85% 325 32.57% 3,181 5.69%
2018 4,705 3.68% 265 26.21% 3,014 5.61%
2019 4,944 3.79% 258 26.33% 2,999 5.55%
2020 4,506 4.56% 181 17.12% 2,863 6.92%

Passenger cars were involved in nearly half of Arizona’s crashes in 2020 (48.04%). It thus seems logical that they were also involved in alcohol-related crashes at a higher rate than other vehicles (54.94%). Passenger cars were involved in over three times as many “crashes causing injury” as the second-most prevalent vehicle in that category, pickup trucks.

Standard civilian vehicles were involved in most fatal alcohol-related accidents, as opposed to emergency vehicles, big rigs, and buses. 38.85% of fatal alcohol-related crashes in Arizona involved a passenger car, while station wagons and pickup trucks each amounted to 20.14% of lethal collisions.

Motor Vehicle Type Total Crashes Percentage of Crashes Fatal Crashes Injury Crashes Property Damage Only Crashes
Passenger Cars 2,420 54.94% 54 943 1,423
Station Wagons 727 16.50% 28 290 409
Pickup Trucks 744 16.89% 28 312 404
Vans 46 1.04% 2 20 24
Truck Tractor 3 0.07% 0 3 0
Concrete Mixer Trucks 0 0 0 0 0
Dump Trucks 0 0 0 0 0
Garbage Trucks 0 0 0 0 0
Tanker Trucks 0 0 0 0 0
Wrecker / Tow Trucks 0 0 0 0 0
Other Trucks 140 3.18% 0 47 93
School Bus 1 0.02% 0 0 1
Other Buses 0 0 0 0 0
Motorcycle 106 2.41% 20 80 6
All-Terrain Vehicle 20 0.45% 5 13 2
Golf Carts 2 0.05% 0 2 0
Moped 2 0.05% 1 1 0
Recreational Vehicle 1 0.02% 0 1 0
Motor Home 0 0 0 0 0
Fire Trucks 0 0 0 0 0
Ambulances 1 0.02% 0 0 1
Other Vehicles 3 0.07% 0 1 2
Vehicle Type Unknown 189 4.29% 1 75 113
Totals 4,405 100.00% 139 1,788 2,478

The damages from crashes and collisions where a driver was suspected to be under the influence of alcohol were extensive in 2020. In total, estimated economic damages from fatal crashes, collision injuries, and property destruction across all Arizona counties amounted to $17,193,082,878. Maricopa County (55.01%) and Pima County (13.23%) combined accounted for 68.24% of the statewide economic damages. Greenlee County, in contrast, accounted for only 0.04% of the overall sum, with no estimated fatality-related damages. The statistics are tracked by county in the chart below, with all figures being in dollars.

County Fatalities Injuries Property Damage Only Total
Apache 228,368,904 36,942,187 2,467,080 267,778,171
Cochise 237,884,275 72,234,969 6,632,280 316,751,524
Coconino 409,160,953 169,203,551 18,711,360 597,075,864
Gila 218,853,533 87,695,516 6,258,480 312,807,529
Graham 142,730,565 30,505,950 2,338,920 175,575,435
Greenlee 0 5,722,703 523,320 6,246,023
La Paz 161,761,307 34,992,258 2,445,720 199,199,285
Maricopa 4,681,562,532 4,230,621,476 546,324,720 9,458,508,728
Mohave 532,860,776 229,270,174 19,565,760 781,696,710
Navajo 361,584,098 81,249,831 8,704,200 451,538,129
Pima 1,541,490,102 672,747,389 60,342,000 2,274,579,491
Pinal 570,922,260 281,309,447 24,179,520 876,411,227
Santa Cruz 66,607,597 10,149,247 1,783,560 78,540,404
Yavapai 608,983,744 279,750,607 24,179,520 912,913,871
Yuma 294,976,501 173,905,786 14,578,200 483,460,487
Totals 10,057,747,147 6,396,301,091 739,034,640 17,193,082,878

In 2020, Arizona saw 4,506 alcohol-related crashes. An “alcohol-related crash” is defined as a collision where the investigating officer indicated that a driver consumed alcoholic beverages. It should not be assumed that every driver involved in an alcohol-related crash was over the legal state BAC limit of .08. Of all Arizona counties, Maricopa had the most alcohol-related collisions, injuries, fatalities, and property damage incidents.

County All Alcohol-Related Crashes Fatal Crashes  Injury Crashes Property Damage Only Crashes Victims Killed Victims Injured
Apache 30 3 20 7 3 29
Cochise 30 2 10 18 2 11
Coconino 159 7 76 76 8 109
Gila 77 1 47 29 1 87
Graham 29 3 12 14 5 27
Greenlee 2 0 1 1 0 3
La Paz 27 3 12 12 4 20
Maricopa 2,834 74 1,115 1,645 81 1,730
Mohave 173 9 78 86 10 117
Navajo 66 7 29 30 7 42
Pima 578 43 242 293 48 350
Pinal 187 4 95 88 4 147
Santa Cruz 9 0 4 5 0 5
Yavapai 193 5 88 100 6 117
Yuma 112 2 45 65 2 69
Totals 4,506 163 1,874 2,469 181 2,863

Arizona DUI Crash Force Statistics, 2015-2020 (Holidays)

During the holiday season, there is frequently an unfortunate uptick in the number of drunk driving incidents, which increases the risk for everyone using Arizona roads. In 2019, 13.58% of the state’s 28,000 impaired driving arrests occurred on Memorial Day, Independence Day, Labor Day, or between Thanksgiving and New Year’s. To effectively combat impaired driving statewide, the Governor’s Office of Highway Safety (GOHS) provided funding for overtime enforcement, enhanced training programs for officers, and equipment.

Arizona’s DUI enforcement program revolves around two key dimensions: 1) year-round DUI recognition and enforcement and 2) enhanced enforcement campaigns aligning with holidays and major state events. The overarching goal of the GOHS is to identify areas that are disproportionately impacted by alcohol-influenced injury and fatality collisions and devote appropriate resources to those regions. DUI Task Forces and local law enforcement agencies use sobriety checkpoints and saturation patrols throughout the year, with a particular emphasis on holidays.

The result of Arizona’s strict enforcement of DUI laws during holidays is seen below. GOHS has not yet updated arrest statistics for Thanksgiving – New Year’s in 2020.

Arizona DUI Arrests By Holiday, 2020

Annual Arizona DUI Task Force Statistics, 2015-2019

Before dropping slightly in 2019, the number of law enforcement officers in Arizona grew steadily from 2015 through 2018. Likewise, the number of people contacted over an infraction or suspected illegal activity grew over that same four-year period, before decreasing in 2019. During the five-year span, a total of 138,481 statewide DUI arrests were made. Just over 25% of these arrests were for extreme DUI, where a driver had a BAC of 0.15 or greater.

2015 2016 2017 2018 2019
Number of Officers 54,075 64,234 74,624 82,818 82,361
Number of Contacts 1,054,247 1,133,840 1,291,989 1,426,651 1,330,198
Sober Drivers Contacted 12,760 9,060 15,723 19,789 34,243
Total DUI Arrests 27,799 26,082 27,683 28,094 28,823
Aggravated DUI 4,070 3,511 3,749 4,014 4,312
Misdemeanor DUI 23,729 22,571 23,934 24,080 24,511
Extreme DUI 7,380 7,135 6,765 7,197 6,847
Under 21 DUI 1,383 1,351 1,346 1,149 993
Average BAC 0.158 0.155 0.152 0.154 0.153
Seat Belt Citations 25,649 29,386 31,242 33,511 31,184
Child Restraint Citations 4,825 5,123 5,890 5,809 4,952
Underage Consumption 5,435 4,829 4,646 4,233 3,497
DUI Drug 5,692 5,030 7,040 6,680 7,287

How Much Does the Arizona Highway Safety Program Spend on Impaired Driving?

DUIs are not only dangerous to the driver and others on or near the roadway but can also necessitate millions of dollars in government spending. “Impaired driving” was by far the largest category of expenses for the Arizona Highway Safety Program in 2020. 43% of the state’s Highway Safety Program budget was allocated to this specific element of traffic safety, whereas School Bus Safety, Roadway Safety, Motorcycle Safety, and Emergency Services combined made up only 3.6%.

2020 Highway Safety Program Approved Costs

 

Works Cited

https://accidentdatacenter.com/us/arizona/phoenix-az/maricopa-county-az

https://azdot.gov/sites/default/files/media/2021/07/2020-crash-facts.pdf

https://www.azdps.gov/safety/impaired-driving

https://www.cdc.gov/nchs/pressroom/sosmap/accident_mortality/accident.htm

https://www.scottsdaleaz.gov/Assets/ScottsdaleAZ/Police/statistics/2020%20Statistics%20and%20Highlights%20_%20FINAL.pdf

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