What are the functions of Level 2 autonomous driving?
3 Answers
The functions of Level 2 autonomous driving include: Adaptive cruise control, lane keeping, automatic emergency braking, and automatic parking. Level 2 autonomous driving refers to partial vehicle automation where the system and human jointly control the vehicle. The vehicle can only operate automatically under certain specific conditions. In some situations, Level 2 autonomous driving does not require human control. For example, vehicles equipped with ACC adaptive cruise control can achieve automatic following function during traffic congestion, and automatically brake to decelerate when the distance to the vehicle ahead becomes too close. Cars with automatic parking can automatically enter a parking space after detecting one. Level 2 autonomous driving provides driving support for multiple operations involving steering wheel and acceleration/deceleration through the driving environment, while other driving actions are performed by the driver. Simply put, if a vehicle can simultaneously control driving direction, acceleration, and braking during operation, it meets the criteria for Level 2 autonomous driving. However, the driver must still remain vigilant and continuously monitor the surrounding environment throughout the journey, ready to take over control at any time. The essence of autonomous driving technology is to use artificial intelligence to replace human labor in various specific scenarios, improving work efficiency and reducing labor costs. Its underlying logic is similar to the "machine replacement" concept of industrial robots, which will have profound impacts on multiple industries including automotive transportation, logistics, and indoor/outdoor commercial services. Therefore, the direct economic value of autonomous driving technology lies in its labor cost savings. All vehicles that do not require human operation can be classified under autonomous driving. Based on scenario openness, driving speed (divided by the 20km/h threshold), and cargo type, autonomous driving applications can be categorized across multiple dimensions: open vs. closed scenarios, high-speed vs. low-speed, passenger vs. cargo transportation, etc. High-speed open-scenario autonomous driving presents the highest technical difficulty and greatest potential, attracting the industry's top companies, yet remains far from commercialization and profitability. In comparison, autonomous driving applications in limited scenarios have lower technical barriers and faster commercialization progress. There are not many mature models with autonomous driving capabilities, with Tesla being one example. Additionally, the market categorizes driving modes into six levels: L0 (manual driving), L1 (driver assistance), L2 (partial autonomous driving), L3 (conditional autonomous driving), L4 (high autonomous driving), and L5 (full autonomous driving). Currently, the highest level available is Level 2 autonomous driving, which still requires human intervention for safety reasons.
I've been driving a car with L2 autonomous driving for a while now, and the features are quite comprehensive. The adaptive cruise control automatically adjusts speed to maintain distance from the vehicle ahead, making long highway drives less tiring. The lane-keeping assist subtly adjusts the steering wheel in turns or on straight roads to prevent drifting, reducing driver fatigue. The automatic emergency braking is also impressive—it senses obstacles ahead and applies the brakes if necessary; it once saved me from a potential rear-end collision. However, don't assume it's completely hands-off. The driver must stay alert and keep hands on the wheel, or the system will issue warnings. Overall, it makes daily commutes and trips much easier, especially in traffic jams where the automatic follow feature is handy. Just remember to regularly check for system updates to ensure safety.
My car is equipped with an L2-level system, with basic functions including adaptive cruise control that automatically adjusts speed and distance on highways or in urban areas, eliminating the need for frequent acceleration and braking. Lane centering assistance provides slight steering adjustments to keep the car centered, avoiding lane departures and making curves more stable. Automatic braking intervenes in emergencies to reduce collision risks. The downside is its reliance on clear road conditions; it may fail in rain or when road markings are unclear. While using it, I feel it enhances focus, but I never fully trust the machine, keeping my hands ready to take over. Additional features like traffic jam assist are particularly useful in heavy congestion. It's important to note that these are driving aids, not replacements. Overall, the investment offers high returns, adding a safety bonus worth trying.
