ANAHEIM, Calif.--A system that warns drivers of unintentional lane departures is now available for most Class 8 trucks, according to the manufacturer, Iteris Inc. Iterus’ Lane Departure Warning (LDW) system is available as an aftermarket application through the OEM modification centers or can be purchased directly from Iteris. The LDW kit can be installed on any Class 8 truck with a J-1939 data bus, including most trucks built since 1999. In addition to the aftermarket availability, Iteris' LDW is currently being offered as an Original Equipment Manufacturer (OEM) installed aftermarket option in International(R) 8600, 9200i, 9400i, 9900i and 9900ix and models that can be installed at the company's Factory Modification Centers. Freightliner also offers the LDW system on its Century, Columbia and Argosy models as a factory installed option. The system uses a windshield-mounted camera that tracks the lane markings and provides "virtual" rumble strips anywhere there are lane markings. Using image recognition software and proprietary algorithms, the system monitors the relative position of the truck. If it unintentionally crosses the lane markings, the system automatically emits a distinctive rumble strip sound on the right or left side depending on the direction of travel, alerting the driver to make a correction. Use of the truck's turn signals automatically overrides the system.