LKAS

Lane Keeping Assist System (LKAS) is a driver assistance feature in many modern vehicles designed to help keep the car within its lane. It typically relies on a forward-facing camera to detect lane markings and, in some implementations, additional sensors. LKAS is part of broader advanced driver assistance systems (ADAS) and is commonly paired with adaptive cruise control as a Level 2 automation feature.

Operation and behavior: When lane markings are detected, LKAS tracks the vehicle’s position relative to the lane center. If the car drifts toward a boundary without an intentional turn signal, the system can provide steering adjustments to steer the vehicle back toward the lane center. Some implementations offer lane-centering at highway speeds, while others only warn of drift and require the driver to steer back. Visual or audible alerts may accompany the assistance, and in many vehicles the system requires the driver to keep hands on the wheel and remain attentive.

Variability and naming: LKAS is marketed under different names by automakers. Some brands use Lane Tracing Assist, Lane Centering, or similar terms. The exact behavior—such as steering intensity, speed range, and whether it operates in conjunction with other systems—varies by model and manufacturer.

Limitations and safety considerations: LKAS depends on clear lane markings and favorable road conditions. It may be less effective in rain, snow, construction zones, or roads without well-defined lanes. It is not a substitute for driver attention or control; the driver remains responsible for vehicle handling and must be prepared to take over if the system cannot operate safely or disengages.

Relation to other systems: LKAS is commonly integrated with adaptive cruise control and, in some vehicles, with lane departure warning and other ADAS features to form a cohesive driver assistance package. See also Lane Departure Warning and Adaptive Cruise Control.