Lane Keeping Assist (LKA)

Lane Keeping Assist (LKA) is an advanced driver assistance system designed to keep you in your lane. LKA typically uses a front-facing camera to detect lane markings and automatically engages if you approach or cross lane markings without turning on your turn signal. The system uses steering or braking correction to guide you back into your lane.


LKA technology is combined with Lane Departure Warning (LDW). Whereas Lane Departure Warning is programmed to warn you with sound, light, or steering wheel vibration when you've drifted out of your lane, LKA is a more advanced technology that has active correction skills. 


Sometimes LKA and LDW systems are also integrated with the vehicle's blind spot warning system. Users are very satisfied with the LKA system. One-third of owners of cars with LKA say it helped them avoid an accident. 


For Lane Keeping Assist to work correctly, the camera installed in the car needs to be calibrated. Such procedures are usually carried out in car repair shops with special targets. 


Calibration features:


  • The surface of the target must be perpendicular to the camera in both horizontal and vertical orientations
  • The target must be securely fixed
  • The target must have reflective markings that are different from the elements of the strip
  • The target must be 30 cm wide and 100 cm high
  • There should be no strokes or text marks near the target
  • The target must be well-lit and free of any shadows.


Experts say the most optimal vehicle speed for LKA activation is 70-140 km per hour. 


However, there are certain conditions when LKA may not work. For example, if the lane is not visible due to rain, snow, or dust. LKA will not activate if it is too dark or if the road lane is too narrow or wide, or if there are two or more lanes of traffic. The windshield and camera lens must also be clean.