Lane assist is an advanced driver assistance technology designed to keep vehicles safely within their lanes, preventing accidents caused by unintentional lane drifting. Using cameras and AI-based algorithms, the system continuously monitors road markings and provides visual, audio, or tactile alerts if the vehicle begins to veer off its lane without signaling. More advanced versions, known as lane keeping assist, go a step further by applying gentle steering corrections to guide the vehicle back into the correct path. This feature is particularly useful on highways and long-distance drives, where fatigue or momentary distractions can lead to dangerous lane departures. Integrated with other ADAS systems such as adaptive cruise control and steering assist, lane assist enhances overall driving safety and convenience. While it performs best in clear conditions with visible lane markings, modern systems are improving to work even in low visibility and poor weather. Many vehicles allow drivers to customize sensitivity levels or switch the feature on and off based on preference. As safety regulations evolve, lane assist is increasingly becoming a standard requirement in modern cars. Ultimately, lane assist provides peace of mind, reduces accident risks, and supports the broader move toward semi-autonomous and fully autonomous driving technologies.