Lane Departure Warning (LDW) and Lane Keep Assistance Systems (LKAS) help you stay safe on the highway by keeping your vehicle in lane while at speed. Both LDW and LKAS technologies use cameras (typically mounted behind the windshield) to read the lines ahead.
LDW systems simply notify the driver that they’re crossing over the line via an audible warning or vibration, prompting the driver to take action. LKAS takes it up a notch by physically applying a correction to steering, automatically keeping the vehicle in lane.
Technology has come a long way since 2004, when the Infiniti FX was the first vehicle in America to offer a Lane Departure Warning System. LDW and LKAS were initially offered on luxury vehicles, but are now available on a wide range of vehicles, including some of the most popular compact and midsize sedans (albeit at higher trim levels).
Lane Keep Assistance Systems are not intended for hands-off driving. They rely on a clear view and discernible road markings. The systems should not be relied upon in severe inclement weather (fog, heavy rain, and snow) or on poorly marked roads.