Lane departure warning systems (also known as lane keep assist) help prevent unintentional lane drifting. They use a camera to watch the road and alert you if you stray. Here’s what you need to know:
- Learn the alerts. Depending on your car, the system may flash a warning light, beep or gently nudge the steering wheel to guide you back.
- Know the acronyms. Terms like LKA, LDW, LKAS and LFA all refer to lane keeping functions. Lane following assist centres the car within the lane.
- Keep the camera area clean. Mud, bugs or a foggy windscreen can block the camera, so wipe around your rear-view mirror regularly.
- Watch the road markings. Faded or wet lane lines and glare from the sun can confuse the system, so always stay attentive and be ready to steer.
- Don’t fight it. Rest your hands lightly on the wheel and feel how the car responds on gentle curves and straight sections.
- Use it wisely. Consider turning the system off in heavy rain, roadworks or on gravel roads when the camera can’t see clearly.
- Pair with smart cruise carefully. Lane following assist works well with adaptive cruise but may switch off if markings are unclear.
- Practise on quiet roads. Observe how the system behaves on well-marked highways so you know what the warnings feel like.
- Remember you’re in control. Lane departure warning is a gentle helper. It won’t steer for you.
Lane keeping isn’t trying to steal the wheel. It’s more like a friend tapping your shoulder when you drift. Stay alert and use the tech to your advantage. For more plain-English guides, explore the Driver’s Lounge.
Hiran Alwis is an automotive lecturer and ADAS specialist with over 15 years of experience in diagnostics, advanced safety systems, and technical training. He founded ADAS Project to help everyday drivers and workshop technicians understand and safely use advanced driver assistance systems.