This document presents performance guidelines for the design and development of road departure warning systems to improve vehicle safety by eliminating or mitigating road departure crashes through driver notification or warning. Performance guidelines are presented for two classes of road departure warning systems, Lane Drift Warning Systems (LDWS) and Curve Speed Warning Systems (CSWS). A LDWS is designed to warn in the event of an unintentional drift out of the travel lane, typically due to driver drowsiness, distraction or inattention. A CSWS is designed to warn if the vehicle is approaching a curve too fast for the current conditions. All aspects of system performance are addressed, including sensing requirements, warning algorithm requirements, driver interface requirements, test procedures, and estimation of associated benefits. These guidelines are intended to be used by manufactures and developers of road departure warning systems as a tool to: 1. Standardize system requirements, 2. Standardize driver interface and control across systems developed by different manufacturers, and 3. Standardize test procedures to verify proper system operation. (Author/publisher)
Abstract