Research shows that drivers expect a great, simple user experience, with a radio button to access DAB easily and quickly, an A-Z station list to browse stations, pre-sets that are easy to set, and terminology that is easy to understand. 

WorldDAB has produced a set of UX guidelines for automotive manufacturers and broadcasters on how to deliver the best possible digital radio user experience. These guidelines were informed by research carried out in 2017 - read more about that research here. 

In-Car DAB+ Digital Radio
Guidelines for creating a great experience of broadcast radio in vehicles
The UX Guidelines will help broadcasters and vehicle manufacturers deliver a consistent and enjoyable radio experience for drivers.