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This SAE Recommended Practice defines key terms and metrics applied in the analysis of video based driver eye glance behavior. It can be applied in environments from real world trials to laboratory based driving simulator studies evaluating Transport Information and Control Systems (TICS). The procedures described in this document could also apply to more general assessments of driver visual behavior in the absence of TICS or other advanced display and control systems associated with Intelligent Transportation Systems (ITS). Driver workload studies, design of traffic control devices and roadways, modality interference from use of cell phones, mirror redesign, situational awareness, and the effects of driver stress from sleep loss and trip delays are just a few of the studies that would benefit from a standard practice for measuring visual allocation.

The Road/Lane Departure Warning System is a crash-avoidance technology which warns drivers if they are drifting (or have drifted) out of their lane or from the road. This warning system is designed to help prevent the possibility of a run-off-road crash. This system will not take control of the vehicle; it will only let the driver know that he/she needs to steer back into the lane. This warning system is not designed as a lane-change monitor, which addresses intentional lane changes, or a merging system which warns of other vehicles. This informational report applies to OEM and after-market Road/Lane Departure warning systems for light-duty vehicles on relatively straight roads with a radius of curvature of 500 m or more, and under good weather conditions. Future revisions should consider the implications of newer variations on the user experience.

This document specifies the minimum recommendations for Blind Spot Monitoring System (BSMS) operational characteristics and elements of the user interface. A visual BSMS indicator is recommended. BSMS detects and conveys to the driver via a visual indicator the presence of a target (e.g., a vehicle), adjacent to the subject vehicle in the “traditional” Adjacent Blind Spot Zone (ABSZ). The BSMS is not intended to replace the need for interior and exterior rear-view mirrors or to reduce mirror size. BSMS is only intended as a supplement to these mirrors and will not take any automatic vehicle control action to prevent possible collisions. While the BSMS will assist drivers in detecting the presence of vehicles in their ABSZ, the absence of a visual indicator will not guarantee that the driver can safely make a lane change maneuver (e.g., vehicles may be approaching rapidly outside the ABSZ area).