Age-related changes in cognitive, perceptual, and motor abilities are thought to be responsible for older driver safety problems and reduced mobility. In-vehicle navigation and collision avoidance technologies may help counter some of the performance limitations associated with aging. Whether or not older drivers will purchase and use such technologies to increase their safety and mobility depends on how well system designers understand the special needs and capabilities of this group and incorporate them into device designs. This paper will examine research fmdings related to older driver safety problems and capabilities that are relevant to the design of advanced technology, in-vehicle systems.