Road map of USA created from OpenStreetMap data.
This is experimental map. It is a result of an attempt to create a map for Garmin with reasonable routing on long distances. Map size is about 3GB.
Map is divided into 3 parts: West, Middle and East.
Archives contain maps in files *.img packed with program 7-zip. Unpacked files *.img should be saved in a folder \Map on nuvi od SD card. Each part can be used independently.