Technology to assist drivers is not always user tested on older people who are more likely to have a decline in cognition and perception. Developers who wanted to develop an smart phone app specifically to help older drivers soon found that they didn’t want a special or segregated application just for them. The developers eventually found that by applying universal design principles to their design, it was useful for drivers of all ages. After adopting UD principles in development they were able to change the name from Older Driver Support System to Road Coach. The article is a long technical road safety report from University of Minnesota, but the executive summary and conclusions provide most of the key detail. You can skim read the rest unless you are a road safety person. The title of the paper is Older Driver Support System (ODSS) Usability and Design Investigation.