Major car brands are saying that their smart cars have "high-end intelligent driving", which can achieve high-speed navigation or urban piloting, and will be defined by various English abbreviations.
Most car enthusiasts actually don't even know what the corresponding words of these abbreviations are, and what can be used as a reference is nothing more than the description of the brand, which is easy to cause wrong understanding, judgment and use;
Correct Answer:
At present, the intelligent driving system of all mass-produced intelligent vehicles is "≤ L2", and no mass-produced commercial vehicle has reached L3 level, even if some cities recognize L3 intelligent driving vehicles.
L0&L1
Not all vehicles can achieve L2 intelligent driving systems, and many vehicles only have L0 or L1 standards.
L0 is manual driving, which can be understood as any program without intelligent assisted driving system.
L1 is the primary assisted driving, and there is actually only one corresponding function, that is, "cruise control" or "adaptive cruise".
Cruise control can do according to the set speed of driving, even if there is a vehicle in front of the deceleration, can not automatically follow up the deceleration, the driver needs to manually brake to slow down, but can push the button or lever to make the vehicle automatically accelerate to the set speed. This is the most basic level of L1 assisted driving, and such a function is actually very common, and even some two-wheeled electric vehicles have a handlebar cruise control.
Not all smart cars with adaptive cruise control meet L2 standards, and a complete L2 intelligent driving system requires multiple programs to run together.
Adaptive cruise control can only detect the road conditions ahead, and can effectively slow down when the vehicle in front slows down or finds obstacles, and can automatically accelerate when the vehicle in front accelerates or obstacles disappear, and that's it. Vehicles that don't have automatic lane changing, lane keeping, or other functions are just an active braking system, but because they use fewer sensors or lower standards, such as cameras or a small number of millimeter-wave radars, there is a high risk of misjudgment in use, resulting in the failure of active braking properly.
Therefore, adaptive cruise is not omnipotent, and there are no accurate statistics on the probability of misjudgment.
L2
Regardless of the name of the intelligent driving system given by the car company, all TO/C smart cars now only have the standard of L2 intelligent assisted driving.
What is L2?
It's all.
Level 3 is conditional autonomous driving, Level 4 is highly automated driving, and Level 5 is full autonomous driving! Whether "high-level" is equivalent to "high-level" is debatable, and if it is generally believed that the meaning of the two words is the same, then all intelligent driving systems defined by "high-level" seem to be suspected of false or exaggerated propaganda at this stage.
The core of the L2 intelligent driving system is still adaptive cruise, and most cars can also achieve lane keeping, lever lane change and lane merging assistance, and basically can't do one thing: recognize road lights. Vehicles that meet the L2 intelligent driving system standard generally do not recognize traffic lights, and if there is no vehicle in front of you and the driver does not actively apply the brakes at an intersection, then even if there is a red light ahead, it will not slow down.
Therefore, the L2 intelligent driving system is only partially autonomous, and the driving environment monitoring and takeover of the vehicle needs to be mastered by human drivers, and the so-called intelligent driving system only carries out basic driving operations.
To sum up, the real high degree of automatic driving is L4 level, and now even L3 level has not been applied in the C-end, so there is no real intelligent driving car at all; as for the lack of a personal user and in line with the L3 level of intelligent cars, the reason is also very simple, because the L3 level of commercial vehicles in the process of using the intelligent driving system causes traffic accidents, the car companies that bear the responsibility rather than the car owner, it seems that no car companies are willing to take this risk.
Are you still willing to hand over driving safety to smart cars?
At this stage, the automotive intelligent driving assistance system is only an assistance system used to reduce the degree of driving fatigue, and it is still thousands of miles away from the real full automatic driving.
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