Lane Departure Warning (LDW) is one of the most widely deployed ADAS features in modern vehicles. It uses a forward-facing camera — typically mounted behind the windshield near the rearview mirror — to monitor lane markings on the road. When the system detects the vehicle drifting across a lane boundary without a turn signal, it alerts the driver with a visual indicator, audible chime, or steering wheel vibration.

How the Camera Works

The LDW camera continuously analyzes the road ahead, identifying painted lane lines using contrast detection algorithms. The camera must be aimed precisely at the horizon, calibrated to the vehicle centerline, and set to the correct mounting height. Even a minor shift in camera angle — caused by a windshield replacement or a minor collision — can render the LDW system unreliable or completely inactive.

The Role of Target Boards in LDW Calibration

Target boards provide the reference pattern the calibration software uses to calculate the correct camera angle. The target must be placed at a specific distance in front of the vehicle, centered on the vehicle axis, and held perfectly level. ADAS Parts Express LDW target boards are manufactured to precise dimensional tolerances and feature high-contrast patterns that are optimized for Autel camera calibration routines.

Which Vehicles Require LDW Calibration?

If any of the following work has been performed, LDW recalibration is likely required: windshield replacement, front bumper repair or replacement, wheel alignment adjustment, suspension component replacement, or any collision repair affecting the front of the vehicle. Always consult the vehicle-specific OEM service information to confirm calibration requirements before returning the vehicle to the customer.

At ADAS Parts Express, we stock LDW target boards compatible with a wide range of domestic and import vehicles supported by Autel software. Order today and make ADAS calibration a profitable part of your shop workflow.