How cruise control can expose the driver in the rain

This news is unlikely to please motorists who drive new and relatively new cars equipped with driving assistance systems. Despite the possible initial skepticism, everyone, without exception, quickly gets used to the convenience of adaptive cruise control and begins to rely on autobraking and lane change assist. But experts are finding new evidence that driving assistance systems can be dangerous. AAA — American Automobile Association prepared fresh evidence.

The association has applied closed track rain simulations at the Center for Automotive Research and verified ADAS performance under these conditions.

Driving assistants may not work correctly in rainy weather. That is, just at such a moment when they are needed most of all to hedge in poor visibility conditions. This is not a theoretical assumption, but a conclusion based on experiment. The AAA has applied closed track rain modeling at the Center for Automotive Research. To do this, an injection nozzle was installed on the windshield, which sprayed water under high pressure.

It turned out that in rainy weather, the emergency automatic braking system does not prevent accidents at a speed of 56 km / h in more than a third of cases. At a speed of 40 km / h, the system did not work in 17%. The lane compliance system is even worse — it did not keep the car in the lane in 69% of situations.

Moreover! Water fell only on the glass, and the road and the wheels of the cars remained dry, that is, it was enough to “spray” the sensors. In a real rainstorm, the results of the systems will be even worse.

Interestingly, dust and dirt on the windshield does not have the same consequences as water, which are critical for driving assistants.

Testers are once again urging drivers not to rely solely on electronic assistants. Almost all motorists who use driving assistants relax and stop carefully monitoring the traffic situation.

Earlier, experts from the US Insurance Institute for Highway Safety and the AgeLab of the Massachusetts Institute of Technology proved that driving assistants are addictive and reduce the concentration of the person behind the wheel. And this does not happen right away — after about a month people become inattentive.

Photos are taken from open sources.

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