this study casts doubt on its efficacy

An American study points to the faults of the automatic emergency braking and, in fact, at normal speed, this driving aid has encountered problems on several occasions.

volkswagen front assist
Source: Volkswagen

The most modern cars today are loaded with technologies ofdriving aidseven the most “basic” models, since certain aids are now mandatory and standardized by the legislator.

it’s the same for the independent body Euro NCAP that tests the safety of new cars through a strict protocol. Within your new testing process, driving aids now have a ubiquitous place. As a result, a cheap car with the bare minimum in terms of benefits can be seen your note plummeting and thus alter their business performance.

A technology that has not evolved since its launch?

Among the driver assistance technologies that have become more democratized is automatic emergency braking. Its operation is simple: thanks to sensors and a camera, the car is able to analyze what is happening ahead and therefore react faster than the driver if ever a car suddenly brakes or an obstacle appears on the road. Which minimizes or even avoids the accident. This is, for example, the case with the front assist functionality in volkswagen or evenTesla autopilot under the name of “Collision Avoidance Assistance”.

But a new US study highlights some shortcomings. According to the American Automobile Association (AAA), automatic emergency braking is effective in preventing rear-end collisions at low speeds. but it’s bad when vehicles are driven at more normal speeds.

Volkswagen Front Assist-15

For this study, AAA used four vehicles and tested their automatic emergency braking system to see if it had improved since it was introduced to production vehicles nearly 20 years ago. And the least we can say is that the results were not brilliant.

“Automatic emergency braking does the limited job for which it was designed well”Greg Brannon, AAA’s director of engineering and industry relations, said in a statement. “Unfortunately, this task was developed years ago and the regulator’s low-speed accident standards have not evolved. »

In other words, current systems haven’t really evolved since the first models came out several years ago. Being an American study, all vehicles tested are models that sell well in the United States. This is how the Chevrolet Equinox LT, Ford Explorer XLT, Honda CR-V Touring and Toyota RAV4 LE were tested. This study also comes at the right time, as from September 2022, all new cars sold in the United States will be required to have automatic emergency braking as standard.

Results that vary with speed

AAA wanted to see how the technology works in two relatively common and, unfortunately, the most deadly crash scenarios: “T” collisions and left turns in front of oncoming vehicles. From 2016 to 2020, these two types of collisions accounted for nearly 40% of all fatalities in two-vehicle crashes in which the colliding vehicle did not lose traction or veer off the roadway prior to the collision.

In the test of “T” collisions and left turns in front of an oncoming vehicle, automatic emergency braking failed to prevent all AAA-managed collisions. The system also did not alert the driver and slowed the vehicle down.


In rear crash tests, the technology performed somewhat better, as long as the speed was low enough. At 50 km/h, the system avoided 17 out of 20 collisions, or 85%. For the three tests that resulted in an accident, the impact speed was reduced by 86%. Instead, at 65 km / h, it spoils a bit. Automatic emergency braking prevented only 6 of 20 rear-end collisions, or 30%. For the tests that resulted in an accident, the impact speed was reduced by 62%.

This study will undoubtedly find an echo among manufacturers, manufacturers who are increasingly looking for more safety on board their car. returnfor instance, has set a goal of zero fatalities in its new vehicles from 2020, in particular by taking various measures, in addition to driving aids, such as reducing the maximum speed to 180 km/h. It is for this reason that The future Volvo EX90 100% electric will be the safest car of the Swedish manufacturerwith numerous driving aids, some never before seen in a car.

Volvo formalizes the existence of its 100% electric SUV, the EX90, successor to the XC90. It will be released on November 9. In the meantime, the brand is revealing some very interesting elements, especially on the security side,…
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