Ask most Arizona drivers which vehicles cause the worst crashes, and they’ll probably point to semi-trucks. The state’s own crash data tells a different story. According to the Arizona Department of Transportation’s Motor Vehicle Crash Facts reports for 2023 and 2024, motorcycles remain by far the riskiest vehicle type on Arizona roads, even after a year of real improvement.
The numbers behind the risk
In 2024, motorcycles made up just 1.3% of all vehicles involved in Arizona crashes, 3,104 out of 236,193. Yet they accounted for 227 of the state’s fatal-crash involvements, a fatal-crash rate of 7.3%. Compare that to passenger cars, which showed up in crashes 32 times more often but had a fatal-crash rate of only 0.53%, roughly a tenth of the motorcycle figure.
The injury numbers are just as stark. Nearly 78% of crashes involving a motorcycle resulted in an injury in 2024, up slightly from 76.3% in 2023. For passenger cars, that figure sat at 30.6%. Motorcycle riders also accounted for 215 of the state’s 694 driver fatalities in 2024, meaning close to a third of all driver deaths on Arizona roads involved a motorcyclist.
Why the gap? A motorcycle offers none of the structural protection a car’s frame, airbags, and crumple zones provide, so a crash that a car occupant might walk away from can be catastrophic for a rider. That physics doesn’t change year to year, which is part of why motorcycles hold this position even as other numbers shift.
The good news: motorcycle safety is trending better
To ADOT’s credit, motorcycle-related outcomes improved on nearly every measure between 2023 and 2024. Fatal-crash involvements dropped from 263 to 227, a 13.7% decline, and rider deaths fell from 251 to 215, a 14.3% decline. Alcohol-related motorcycle crashes fell even further, down 25.3% year over year, with alcohol-related motorcycle fatal crashes down 20.4%.
Motorcycles are still overrepresented in impaired-driving crashes. In 2024, they accounted for 2.6% of alcohol-related crashes despite being only 1.3% of all vehicles in crashes, meaning a motorcycle was involved in a DUI crash at roughly double the rate you’d expect from its share of traffic. That overrepresentation ratio was even higher in 2023 (2.4x versus 2.0x in 2024), so the trend is real, just not solved.
A vehicle type moving the wrong direction
Not every category improved. Arizona’s “station wagon” classification, ADOT’s own reporting category, distinct from sedans and pickups in its data, was the one common vehicle type that got measurably more dangerous between 2023 and 2024. Fatal-crash involvements in this category rose from 389 to 434, an 11.6% increase, while its fatal-crash rate climbed from 0.70% to 0.77%. Driver deaths in this category jumped 20%, from 109 to 131, and passenger deaths rose by 34% too, from 56 to 75.
That’s a notable reversal set against a statewide trend of declining traffic deaths, and it’s worth watching in next year’s report to see whether it continues or was a one-year fluctuation.
Semi-trucks: more trucks, not more risk
Truck tractors, the semis hauling freight across the state, tell an encouraging story that runs against common assumptions. Their presence in Arizona crashes jumped 30.6% between 2023 and 2024, from 2,485 to 3,245 vehicles, likely reflecting growth in freight traffic. Despite that surge in exposure, fatal-crash involvements stayed almost flat, 107 in 2023 versus 106 in 2024, which means the fatal-crash rate actually dropped from 4.31% to 3.27%. More trucks on Arizona highways did not translate into a proportional rise in deadly crashes.
How these crashes happen
Vehicle type is only part of the picture. ADOT’s multi-unit crash data shows rear-end collisions are by far the most common type on Arizona roads, making up 37.5% of all multi-vehicle crashes, followed by sideswipe collisions (18.6%) and angle crashes (17.6%). Head-on collisions are comparatively rare at just 2% of crashes, but they’re the deadliest by far, with a 4.1% fatal-crash rate, several times higher than rear-end or sideswipe crashes.
The broader trend: safer overall, with one exception
Zooming out, 2024 was a genuinely better year for Arizona road safety. Total fatal-crash involvements across all vehicle types fell 8.3%, from 1,980 to 1,816, and driver deaths dropped 6.8%. Passenger cars, pickups, and vans all posted better fatal-crash rates than the year before.
One figure cuts against that improvement. While total alcohol-related crashes fell 3.9% statewide, alcohol-related fatal crashes actually rose 5.4%, from 243 to 256. Fewer impaired-driving crashes happened in 2024, but the ones that did were more likely to turn deadly. That’s a detail easy to miss in a year with an otherwise positive safety story.
What this means for Arizona drivers
None of this means any single vehicle type is safe to be careless around, or that a sedan crash can’t be devastating. What the ADOT data shows is a pattern: certain vehicle types carry structurally higher risk in a crash (motorcycles, most clearly), certain categories are trending in directions worth watching (the station wagon classification), and some assumptions about danger on the road (more trucks means more deadly crashes) don’t hold up against the numbers.
For riders, the takeaway is straightforward: the data reinforces the value of visible gear, defensive riding around impaired drivers, and extra caution at intersections, where a large share of motorcycle crashes tend to originate. For everyone else, it’s a reminder that Arizona’s roads are safer than they were a year ago, but that progress isn’t even across every type of vehicle out there.
Matthew Wilde
Matthew Wilde is an automotive journalist with experience contributing to leading publications. He focuses on delivering clear, well-researched analysis of automotive industry news and vehicles. Growing up surrounded by a variety of cars, Matthew developed a strong foundation in automotive technology and design. His work emphasizes accuracy and depth, aimed at informing both enthusiasts and industry professionals with straightforward, precise reporting.
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