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Qiao Ruida shook his head and said: "Qingqing, you underestimate our company's R&D strength. Ruida Roadster's autonomous driving capability can at least be classified as L3 level. If cloud computing assistance is turned on and the network condition is good, most of the Some L4-level functions can also be implemented.”

Autonomous driving is divided into different levels, each representing a different degree of automation and the role of the driver.

L1 level: The main control is achieved by the driver. The system provides real-time assistance. In emergency situations, the system will intervene. For example, during emergency braking, the ABS and ESP body stabilization systems will intervene to ensure that the vehicle drives stably. There is also a hill start assist function to ensure The vehicle will not roll when starting on a steep slope. This level of system mainly intervenes in the braking and accelerator. There are not many vehicles on the market that can reach the L1 level now. Ten years later, that is, in 22, most of the newly developed models will belong to this level.

L2 level: The driver of this level of vehicle still needs to put his hands on the steering wheel and concentrate on driving, such as active braking technology: when a pedestrian or other obstacle suddenly appears in front, the vehicle will actively brake but will not avoid it. This level of car computer will intervene in the steering wheel, such as the lane keeping function: to ensure that the vehicle is driving in one lane, and when the vehicle deviates, the system will actively correct it. Automatic parking function: Common vehicles automatically park and enter the parking lot. Therefore, L2 level autonomous driving is different from L1 level which only intervenes in braking and accelerator, but is added to the steering wheel.

L3 level: This level of autonomous driving is conditional automatic control. The most intuitive one is the anti-rear collision automatic braking that is a fusion of the adaptive cruise system and the forward collision warning system. When it senses that a collision is about to occur, the system will take a relatively The driver reacts more quickly to take over the execution of the vehicle's brake pedal. The driver does not need to focus on the road conditions. The vehicle can actively avoid obstacles and actively merge and overtake. L3 drivers can let go of the steering wheel appropriately. When the vehicle prompts the driver to take over the vehicle, the driver still needs to control the steering wheel. Basically Semi-autonomous driving is achieved. The Ruida Roadster under development can reach this level without being connected to the Internet.

L4 level: The birth of this stage means that the development level of smart cars has entered the highly autonomous driving stage. At this stage, the vehicle can drive fully autonomously, but will be affected by the weather and surrounding environment. The driver does not need to put his hands on the steering wheel. If the driver is brave, he can sleep in the car. The vehicle will automatically accelerate, decelerate and overtake, and will automatically park and store when it reaches the destination. After Ruida Roadster turns on cloud computing support, it can basically reach this level.

L5 level: This level achieves true driverless driving, and the vehicle can drive automatically in any weather environment. Vehicles of this level can have no steering wheel, and the driver can safely sit in the back and read the newspaper and sleep. An L5 level autonomous vehicle no longer needs to be called a vehicle, but rather a "butler" because it can take the initiative to pick you up from get off work and take you home. You can imagine that when you come back from a business trip, the butler will automatically pick you up at the airport and send the owner home safely. After the owner gets off the car, he will continue to light up the headlights to illuminate the owner's way home. When you After returning to the room, he silently left the scene and returned to his place.

As a female driver, Du Qingqing deeply hates driving, especially driving in congested urban areas. I am very looking forward to the intelligent driving function of the car. However, fully autonomous vehicles still exist in science fiction works. Even the technology verification vehicles of major car companies can only achieve L3 level autonomous driving functions, and none of them have been implemented in mass-produced vehicles. . Now I am surprised to hear that the Ruida Roadster sports car developed by my company can achieve L4 level autonomous driving.

"L4 level, are you kidding me? Doesn't that mean that in the future when you drive a Ruida Roadster on the road, the on-board computer will be able to complete most of the driving work, and the driver will just sit there and act like a mascot?"

Qiao Ruida spread her hands and said helplessly: "Things are not that simple. The Ruida Roadster sports car is equipped with a high-definition camera, lidar, millimeter wave radar, accelerometer, gyroscope, dual-mode GPS chip, high-precision map, and high-definition Computing power car chip. At this level of hardware, it is completely sufficient to achieve L4 level autonomous driving functions. It is only slightly lacking in computing power and response to emergencies. This also results in the fact that Ruida Roadster can only turn on L3 at ordinary times. Level of autonomous driving. If you want to activate the L4 level of autonomous driving function, you need to connect to the Internet and access the cloud computing system of Reda Technology Company to solve the problem of insufficient computing power of the vehicle. However, with the 3G mobile communication network that has just become popular in China, , in terms of communication speed and delay, it cannot meet the requirements. In other words, even if we build our Ruida Roadster sports car, it is limited by the level of mobile communication and still cannot achieve L4 level autonomous driving."

Encountering a red light again, Du Qingqing had to brake again, then turned around and asked: "Didn't it say that 4G cameras will be distributed in China at the end of this year and the construction of 4G mobile communication networks will begin? Is it possible that with the transmission rate of the 4G network? , and low latency, can’t they meet the cloud computing requirements of the Ritar Roadster sports car?”

Qiao Ruida recalled the development process of self-driving cars in his previous life, and then said: "In terms of transmission speed, the 4G mobile network is almost enough, but the delay is still a bit high, and the stability of the network is difficult to meet the requirements."

This year is 2012, and 4G is a new thing all over the world. What everyone sees are test data from some communication laboratories. After the 4G mobile network is installed, no one knows the specific transmission speed and low latency. In other words, Qiao Ruida, a reborn person, can rely on the experience of her previous life to judge that the 4G network is still unable to meet the cloud computing needs of Ruida Roadster sports car.

The upgrading of mobile communication facilities is a matter for the entire country, and even the entire world. Even Qiao Ruida, a cheat player, can affect it slowly and cannot promote it quickly. Fortunately, at this stage, there are not many car companies developing autonomous driving, and even fewer have been installed. L3-level autonomous driving functions can also beat many domestic and foreign car companies. As for the L4 autonomous driving function of the Ritar Roadster sports car, it can only be shelved for now. One day in the future, when 5G mobile communications become popular, we will conduct another OTA upgrade of the car and open the L4 level autonomous driving function, which will be a surprise to the first batch of old users who support Ritar Automobile. (End of chapter)