Abstract
The role of vision in driving is described. How visual information is processed may affect its interpretation. Poor vision is associated with poor driving records, especially in drivers after middle age. Driving simulator and test track studies are described. Simulated cataract caused the greatest decrease in driving performance, followed by binocular visual field restriction. The interaction between drugs such as alcohol and benzodiazepine on the interpretation of visual information is discussed. Selected visual determinants are reviewed, including night vision. The role of motion vision in driving, optic flow, and other sources of information for the control of steering are outlined.