IIHS: Self-driving cars would only prevent one-third of human crashes

IIHS: Self-driving cars would only prevent one-third of human crashes
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Research conducted by the Insurance Institute for Highway Safety (IIHS) has found that self-driving cars may not reduce crashes as much as hoped.

One of the touted benefits of autonomous vehicles is they do not suffer from the same issues as us humans. Tiredness, inebriation, or even a medical condition while at the wheel can often result in injury or fatalities for us mere mortals.

According to automotive safety experts, around 94 percent of crashes are caused by humans. However, the IIHS study found that self-driving vehicles would only stop around one-third of them.

That’s still a welcome improvement, but not the expected leap in safety people are being led to expect.

“Building self-driving cars that drive as well as people do is a big challenge in itself,” said IIHS Research Scientist Alexandra Mueller in a statement. “But they’d actually need to be better than that to deliver on the promises we’ve all heard.”

The IIHS studied 5000 crashes for their research; analysing specific details collected by the National Highway Traffic Association. 

Some crash types were separated out; such as those reported to be caused by “sense” errors like failing to spot hazards and poor visibility. “Incapacitation” errors – like alcohol/drug impairment, or medical issues – were also separated out.

These crashes were separated out due to the IIHS finding that self-driving vehicles can successfully prevent such human problems.

For their research, the IIHS assume that all other vehicles are self-driving. Mixing human drivers in with the other road users increases the risk substantially as the vehicles then have to try and predict what the humans are going to do next. With machines, they’ll be able to communicate with them using V2V (Vehicle-to-Vehicle) technology.

“We’re still going to see some issues even if autonomous vehicles might react more quickly than humans do,” explained Jessica Cicchino, a co-author of the study. “They’re not going to always be able to react instantaneously.”

Cicchino gave the example of a cyclist veering into the road. Such an unpredictable action may lead to the car not responding in time or performing a dangerous manoeuvre.

We’ve already seen the devastating consequence of this in a similar scenario when an Uber self-driving car fatally hit 49-year-old Elaine Herzberg as she walked her bike across a street in Tempe, Arizona back in 2018.

The IIHS found that self-driving cars would reduce crashes more by sticking with all traffic laws. If AI allows them to drive more human-like, then it opens up the potential for more human-like crashes.

You can find the full report from the IIHS here.

(Photo by Conor Samuel on Unsplash)

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2 comments on “IIHS: Self-driving cars would only prevent one-third of human crashes

  1. JustSaying on

    The IIHS is funded by automotive insurance companies. After needing to return funds to insured customers as a result of less driven miles and reduced accidents during the COVID-19 pandemic, the auto insurance industry faces a transition to autonomous driving with a strong potential to permanently reduce accident rates. I am not surprised to see a conservative viewpoint of ‘not reduced as much’ – the starting negotiation point of the insurance industry.

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  2. JustSaying on

    The IIHS is funded by automotive insurance companies. After having to return funds during the COVID-19 pandemic because drivers drove less miles and had fewer accidents, the insurance industry is starting to set perceptions of autonomous driving impact as ‘not as much’.

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