Maps for Highly Autonomous Driving (HAD) is one of the key pieces in the puzzle to enable autonomous driving vehicles. This study focuses on elaborating the role of these maps in enabling autonomous driving and answering questions such as why are HAD maps essential? How do they differ from standard navigation maps? The study also provides penetration forecasts in North America and Europe. It also looks into the different mapping methods and map building processes employed. The study investigates the capabilities of key market participants such as HERE, TomTom, Sanborn, Geodigital, and Toyota. It also discusses driver behavior, technology companies, standard publishing formats, and key highlights from East Asia.