Modern cars are fast becoming smarter and safer. With the advent of technologies such as advanced driver-assist systems (ADAS), accidents have been significantly reduced over the years, and drivers now have a range of electronics that assist them in focusing more on driving attentively. One of these innovations is the Lane-Keeping Assist (LKAS), which is now commonly found in many ADAS safety suites.
As its name implies, LKAS is a feature that helps keep a vehicle centered within its lane. While LKAS adds a valuable layer of safety, it also has its share of limitations that every driver should be aware of.
How LKAS works
Like most, if not all, features found in ADAS, the LKAS uses a combination of cameras and sensors to detect the lane markings on the road. When the system senses the vehicle veering out of its lane without a turn signal, it automatically alerts the driver and employs gentle steering inputs to make corrections. LKAS works best on well-marked highways and steady driving conditions, complementing ADAS features like adaptive cruise control (ACC) for a more relaxed, semi-assisted driving experience.
Advantages of LKAS
Enhanced safety – LKAS is primarily designed to prevent sudden unintended lane departures, one of the common causes of side swipes and road departure accidents. Keeping the car centered in the lane reduces the likelihood of collisions caused by distractions or fatigue.
Reduced driver fatigue – During long drives, especially on expressways, the LKAS helps maintain steady lane positioning. This reduces the small but continuous steering adjustments drivers make, resulting in less fatigue and more comfort, especially in long-distance journeys.
A step closer to autonomous driving – As part of the ADAS, the LKAS contributes to the gradual shift towards self-driving technology. It trains drivers to trust and get familiar with semi-automated driving features.
Disadvantages of LKAS
Not for aggressive or highly-active drivers – Drivers who prefer to be “in control” or frequently change lanes to overtake may find the LKAS to be an intrusive feature. This is because the system may resist sudden or frequent lane changes, creating a slight tug on the steering wheel or warning alerts. This can be frustrating, or even annoying, for those who enjoy a more “hands-on” driving style.
Limited functionality on poorly marked roads – LKAS relies on visible lane markings. But it gets hampered when the vehicle is traveling on roads with poor markings. This drawback is especially relevant here in the Philippines, where some roads either have unmaintained markings, vandalism, or no markings at all. As a result, the system may deactivate or function inconsistently. Drivers must always be ready to take full control.
Overreliance risk – Some drivers may become too dependent on the LKAS’ automated features, assuming it can handle steering corrections entirely. LKAS is not an autopilot. It’s an assistive tool. LKAS overreliance could lead to delayed reaction in critical situations. Best to practice safe, defensive driving and to sharpen your senses for alertness on the road beyond what LKAS can offer.
LKAS is a safety feature, not a substitute for skill
LKAS is helpful when used correctly. It’s meant to enhance driver awareness and safety, not replace attentiveness and skill. For drivers who tend to switch lanes frequently or prefer an assertive driving style, LKAS may feel restrictive. However, for everyday commuters and long-distance travelers, it’s an important safety net that can prevent accidents before they occur.
Ultimately, LKAS works best when the driver understands its purpose: to keep you safe, not to restrict your driving experience.
