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Waymo Autonomous Vehicles Show 85% Lower Crash Rates Than Human Drivers

March 26, 2025
Waymo autonomous vehicles crash rates road safety self-driving cars technology
Waymo's autonomous driving system has demonstrated an 85% reduction in any-injury-reported crash rates and a 55% reduction in police-reported crash rates compared to human drivers, highlighting its potential to enhance road safety.

Video: Waymo's Self-Driving Cars Outperform Humans with 85% Fewer Crashes: AI vs. Human Drivers Debate

Waymo Autonomous Vehicle Crash Rate Comparison

Waymo's autonomous driving system (ADS), known as the Waymo Driver, has demonstrated significantly lower crash rates compared to human drivers. Here are the key findings:

  • Any-Injury-Reported Crash Rate: The Waymo ADS had a crash rate of 0.41 incidents per million miles (IPMM), while the human benchmark was 2.80 IPMM. This represents an 85% reduction in crash incidents, meaning human drivers crash 6.7 times more frequently than the ADS.
  • Police-Reported Crash Rate: The Waymo ADS recorded a police-reported crash rate of 2.1 IPMM, compared to 4.68 IPMM for human drivers. This is a 55% reduction, with human drivers crashing 2.2 times more often than the ADS.
  • Statistical Significance: The reductions in crash rates for the Waymo ADS were statistically significant in San Francisco and Phoenix, as well as across all locations combined.

These results highlight the potential of autonomous driving systems to enhance road safety. However, caution is advised when interpreting property damage or injury comparisons due to potential underreporting and imprecision in benchmark estimates.

For more details, you can refer to the original research.

Sources

Comparison of Waymo rider-only crash data to human benchmarks ... Police-reported crashed vehicle rates for all locations together were 2.1 IPMM for the ADS vs. 4.68 IPMM for the human benchmark, a 55% reduction or a human ...
Comparison of Waymo rider-only crash data to human benchmarks ... Police-reported crashed vehicle rates for all locations together were 2.1 IPMM for the ADS vs. 4.68 IPMM for the human benchmark, a 55% ...
After 50 million miles, Waymos crash a lot less than human drivers Instead, Waymo only got in 36 injury-causing crashes across San Francisco or Phoenix. That's an 81 percent reduction in injury-causing crashes.
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