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 found older drivers don’t want a special or segregated app just for them. By applying universal design principles, developers eventually found it was useful for drivers of all ages. After adopting UD principles in development they changed 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 points. 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.