Lane Centering Assist (LCA)
Lane centering assist (LCA) provides continuous steering support intended to keep the vehicle near the center of a detected lane. It usually uses a forward camera to estimate the lane boundaries and the vehicle’s position between them.
What it does
When active, LCA makes ongoing small steering adjustments instead of waiting until the vehicle reaches a lane marking. This distinguishes it from lane keeping assist, which typically gives a brief corrective input during a developing lane departure. Lane centering may be combined with adaptive cruise control, but the exact controls and operating conditions vary by vehicle.
LCA is a driver-assistance feature, not permission to stop supervising. The driver must watch the road, keep control, and respond when the system asks. Missing or confusing markings, roadworks, weather, glare, sharp curves, and blocked cameras can reduce availability or cause unexpected steering.
For control behavior, activation limits, and terminology, see Lane Centering Assist.