What does the effective working speed of LKA mean?
4 Answers
LKA effective working speed refers to the speed range of approximately 30km/h to 160km/h within which the LKA lane keeping system can be activated. The following is an introduction to the automotive lane keeping system: 1. Definition: The Lane Keeping Assist System is a type of intelligent driving assistance system that can control the steering system based on the Lane Departure Warning System (LDWS) to assist the vehicle in staying within its lane. 2. Working principle: If the vehicle approaches a recognized lane marking and is likely to leave the driving lane, it will alert the driver through steering wheel vibration or sound, and slightly turn the steering wheel to correct the driving direction, keeping the vehicle in the correct lane. If no active intervention is detected by the steering wheel for a long time, an alarm will sound to alert the driver.
The effective working speed of LKA refers to the speed range within which the Lane Keeping Assist system can function properly. This feature may not activate when the speed is below 60 km/h, as low-speed driving requires more manual operations, such as frequent steering in urban traffic congestion. At high speeds, the system also has its limits, with many manufacturers setting an upper limit around 140 km/h. Beyond this speed, the system may not respond in time or the risk increases, causing it to automatically deactivate. Therefore, the effective working speed refers to the most reliable and safest operating range for the system, typically between 60-140 km/h, depending on the vehicle model's design.
The effective operating speed range of Lane Keeping Assist System refers to the technical limitations of camera-based lane marking recognition. Having test-driven numerous models, I've observed that the system tends to automatically deactivate below 50 km/h in complex road conditions, while steering corrections may become less responsive beyond 150 km/h. These represent designed safety boundaries - preventing misjudgment of pedestrian lane changes at low speeds and avoiding loss-of-control risks during high-speed scenarios. In practical applications, optimal performance typically occurs within the 70-120 km/h range, such as during highway cruising where it can effectively maintain central lane positioning.
Simply put, the effective working speed range refers to the speed interval where lane assist remains functional. Based on my experience, the dashboard warning light often deactivates when the vehicle drops below 55 km/h or exceeds 130 km/h. This occurs because road markings may be incomplete at low speeds, while the system struggles to make timely steering corrections at high speeds. Note that this range may further shrink during rainy conditions or at night. When selecting a car, check the manual – specifications vary significantly between brands: German models typically operate between 60-160 km/h, while Japanese vehicles may be set at 50-150 km/h.
