We have heard a lot about the automatic driving assistance function in recent years. Since Tesla began to promote its own FSD? Since autonomous driving, the safety of this driving assistance function has been controversial.

▲ The picture shows the car accident that happened in autopilot mode last month.

Especially in the last two years, with the increasing sales of Tesla, more and more drivers began to use the FSD function, but the number of traffic accidents in the process of using FSD is also increasing. This is inseparable from Tesla's vigorous promotion of its autonomous driving technology. As early as 20 19, Tesla publicly stated many times that it is entirely possible for Tesla's models to achieve automatic driving, and said that these models will have the automatic driving ability of urban roads before the end of 20 19.

This kind of official publicity naturally makes many car owners who bought Tesla models rely on Tesla's FSD function; It is undeniable that Tesla's FSD function has its advanced features in both hardware and algorithm, which can give drivers and passengers a good autopilot assistance experience in various road conditions.

But it is this high-profile publicity and good product strength that makes many consumers blindly believe in Tesla's autopilot system. According to a survey conducted by IIHS (High Speed Safety Insurance Association), as many as 48% of Tesla drivers believe that it is safe to leave the steering wheel with both hands after the FSD function is enabled. More exaggeratedly, 6% drivers think it is safe to doze off after turning on the FSD function.

▲ The picture shows the car accident caused by the driver sleeping in the automatic driving mode.

Under this blind trust in the immature autopilot auxiliary function, many car accidents related to Tesla in recent years were caused by turning on the FSD function. This function, which was originally designed to make driving safer, began to take more and more lives.

Finally, last month, the German Anti-Unfair Competition Center took action on this matter. The official organization thinks that Tesla's slogan of completely automatic driving in propaganda is unrealistic; After all, Tesla emphasized that FSD is only a driver assistance system after many car accidents. This inconsistent attitude confirms that the FSD system cannot provide the fully automatic driving function promoted by Tesla.

Subsequently, the court in Munich, Germany made a ruling. Because the court considered Tesla's advertisement to be "misleading" and inconsistent with reality, Tesla will be banned from continuing to advertise the FSD function in Germany. Therefore, at present, any driver's assistance propaganda claiming to free hands on the market can be labeled as "bragging" without hesitation.

But just recently, some domestic models began to claim to be equipped with a driver assistance system that can free hands; When buy buy Jun first saw it, his first reaction was to disdain "another braggart."

However, something unexpected happened. Shortly after seeing the advertisement, Mr. buy buy himself received an invitation to test drive, and the model he experienced was the Cadillac CT6 in the advertisement.

After the initial "disdain", buy buy Jun began to abandon this view step by step in practical experience. First of all, explain the driver assistance system on Cadillac CT6 in principle.

Its scientific name is "Cadillac Super? Cruise "system, as well as Tesla's AutoPilot and Weilai's Nio? Pilots belong to the same level, press SAE? The classification and definition of terms related to the automatic driving system of road motor vehicles belong to L2 automatic driving technology.

However, although they are all L2-level autopilot assistance systems, Cadillac's Super? Cruise is the first L2 autopilot system, which allows drivers to keep their hands off the steering wheel while keeping their attention on the road. Is this because of Chao? Cruise * * * consists of four parts, namely: ACC adaptive cruise, driver's attention keeping system, high-precision map data system and blue line lane central keeping system.

Among them, ACC adaptive cruise system and blue line lane center keeping system can be roughly regarded as automatic driving assistance systems promoted by other brands, which can automatically keep a distance from the car in front on the expressway and stabilize the car body in the lane center, thus realizing semi-automatic driving mode.

But this is super? The biggest difference between Cruise and other driver assistance systems on the market now lies in the driver's attention keeping system and high-precision map data system. In other existing brands, after the driver assistance system is turned on, the hand detection module designed on the steering wheel will be activated to detect whether the driver's hand is on the steering wheel, which plays a role in safety prevention.

But on Cadillac CT6, with the help of adaptive cruise system and blue road system, it is not necessary for the driver's hands to appear on the steering wheel again. Coupled with its high-precision map data and the further blessing of high-precision GPS positioning, Cadillac CT6 can predict the traffic conditions within 2 kilometers of the road, further ensuring the possibility of "liberating" hands.

But CT6 didn't think about "reaching the sky in one step", and completely separated the driver from the driver. Even with further security, Cadillac still believes that the driver's assisted driving can't completely replace the driver's role at this stage, which is why the driver's attention retention system exists.

CT6 detects the driver's state through the driver's attention camera arranged at the top of the steering column, the infrared emitter on the steering wheel and the hand-held steering wheel sensor; Under this kind of multiple detection, even if the driver leaves the steering wheel with his hands, as long as his attention is still on the road, he will exceed? The cruise system can still operate normally.

But as long as the driver's attention deviates from the road, super? The cruise system will send a series of escalation tips to the driver. First of all, the steering wheel light will give a flashing alarm, and the seat will also give a vibration and buzzer alarm. If the driver continues not to take over the vehicle, the system will automatically reduce the speed, park the vehicle in the driving lane, and at the same time, exceed? The cruise system and adaptive cruise control will stop running. Finally, OnStar OnStar will take the initiative to contact the driver to judge whether there is an accident.

With the help of these four systems, buy buy Jun experienced a novel driving process during the test drive of CT6. Mainly reflected in the premise of ensuring concentration during driving, you can let go of your hands for a long time, but the traditional intelligent driving assistance does not allow this, which can not really bring a pleasant and relaxing experience.

At the same time, the precise monitoring of the driver by this system also reflects the sense of responsibility behind Cadillac. Cadillac provides a safer autonomous driving experience while ensuring the driver's driving dominance during driving. In addition, a series of preventive measures have been added, which can even play a great role in some emergencies (sudden illness and fainting of drivers).

But even the Cadillac Super that left a good impression on buy buy Jun? Cruise also faces many difficulties in practical use, such as congestion, which is not uncommon in the traffic environment of China. Cruise system, like other driver assistance systems, is difficult to predict the sudden lane change of vehicles in the next lane like drivers. Under this premise, if you blindly believe in transcendence? Cruise system, as well as negligence in driving, is still dangerous.

However, under the overall test drive experience, this set is super? The cruise system still left a good first impression on buy buy Jun, because, up to now, the domestic autopilot system has appeared in the role of assisting driving. Although the original intention is to free drivers from boring driving scenes, for technical and safety reasons, the most that these driving assistance systems can do at present is to share some mechanical operations during driving for us, and there is still a long way to go before they are completely liberated from driving.

Although in the super? During the operation of the cruise system, the driver's eyes must not leave the road. I can't brush WeChat or watch videos, but I liberated my hands and greatly eased the fatigue of holding the steering wheel for a long time. Therefore, based on buy buy's own experience, I am still happy to choose to let him get involved in long-distance driving. This is because of its performance, which gives buy buy Jun the closest experience to fully automatic driving.

Besides, super? Cruise's usage scenario is limited to highways, so there is a clear capability boundary. It ensures that the driver has the ability to deal with the unexpected situation on the road ahead in time through the attention keeping system, and skillfully avoids the Auto? The pilot can't identify low-speed or even stationary objects on the expressway, and the driver has no time to take over the vehicle, which leads to accidental collision. Among them, the view of Buy buy, a buy buy gentleman who brought enough peace of mind, was strengthened when he came into contact with Cadillac official data, which provided more than 8.8 million kilometers of safe driving without accident records.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.