Three-Dimensional Multiple Object Tracking Speed Thresholds are Associated with Measures of Simulated Driving Performance in Older Drivers

We assessed the relationship between three-dimensional multiple-object-tracking (3D-MOT) ability and older driver simulated driving performance. Participants included 30 older drivers from the local community who completed two experimental driving scenarios, as well as a three-dimensional multiple object tracking task, called the 3D-MOT task. The speed thresholds on the 3D-MOT task were strongly negatively associated with lane deviation and crash rates during a simulated highway drive. Our findings help to expand the existing knowledge regarding multiple object tracking and driving, as it is commonly assumed that some aspects of driving include the ability to track the movement of many objects. Our findings further elucidate the relationship that motion processing has with driving performance in the older driver population.