Can L2 level autonomous driving system be retrofitted?

The Pacific Automotive Network L2 level automatic driving system can be retrofitted. The 21 Mercedes-Benz E300L standard upgrade 23P driving assistance requires replacement accessories to automatically follow the vehicle in front and active lane keeping. Distance control adjusts the distance to the vehicle ahead according to the driver's specifications.

Today, the technological configuration of "L2 autonomous driving" is no longer exclusive to luxury cars. It is now also equipped with household scooters worth 100,000 yuan, and has entered the market. It is a home of ordinary people, so it has attracted more and more attention from mainstream consumers. "What is L2 level autonomous driving?", "Is this function practical?" "With it, can I free my hands and feet?" The author is often asked by friends around me, and many people are influenced by some car companies. "Excessive" publicity has led to certain misunderstandings about this feature. Let’s talk about the L2 level automatic driving assistance system.

How is autonomous driving classified? How is L2 level defined?

There are currently two classification standards for autonomous driving, namely NHTSA (National Highway Traffic Safety Administration) and SAE (Society of Automation Engineers). In comparison, the difference between the standards of NHTSA and SAE is actually not big, but SAE's standards are more detailed and rigorous, so the mainstream in the automotive industry adopts SAE's classification standards.

Let’s first take a look at how SAE grades autonomous driving: Autonomous driving classification Autonomous driving classification name definition Driving operation Peripheral monitoring Takeover application scenario NHTSASAEL0L0 Manual driving The car is fully driven by a human driver Human driver Human The human driver has no L1L1 assisted driving. The vehicle provides driving for one operation of the steering wheel and acceleration and deceleration, and the human driver is responsible for the rest of the driving actions. Human driver and vehicle Human driver Human driver No L2L2 partially autonomous vehicle provides driving for multiple operations on the steering wheel and acceleration and deceleration, and the human driver is responsible for the rest of the driving actions.

Vehicle human driver Human driver does not have L3L3 conditions for automatic driving. The vehicle completes most of the driving operations. The human driver needs to stay focused in case of emergency. Vehicle Vehicle Human Driver No L4 L4 Highly Autonomous Driving All driving operations are completed by the vehicle. The human driver does not need to pay attention, but road and environmental conditions are limited. Vehicle Vehicle Vehicle None L4L5 fully autonomous driving completes all driving operations with the vehicle, and the human driver does not need to pay attention.

As you can see from the table, L0 level is purely manual driving, so needless to say. A vehicle that can independently control one of the directions or accelerate and decelerate is the L1 level. For example, a vehicle equipped with a lane keeping function or one of the adaptive cruise system functions can reach the L1 level. The driving operation is determined by the vehicle and the driver. * Completed at the same time, this is not difficult to understand.

Let’s focus on the L2 level. SAE's definition of L2 level is: "The vehicle provides driving for multiple operations on the steering wheel and acceleration, and the human driver is responsible for the rest of the driving actions." The driving operation is the vehicle, but the environment surrounding the vehicle is monitored and the vehicle is affected after the situation occurs. The takeovers are all drivers.

To put it simply, if the vehicle can independently control the direction (lateral) and acceleration and braking (vertical) at the same time during driving, it will meet the L2 level of autonomous driving. However, during the entire driving process, the driver must pay attention and monitor the surrounding environment in real time, and be ready to take over the vehicle at any time.

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