This map is produced by Hjólafærni á Íslandi and contains a list of bicycle services around Iceland on one side including all the major roads with an indication of how much traffic you can expect on the roads and other details of interest.
The updated 2017 map is at http://cyclingiceland.is/
The line map on the other side shows the various public transport options in Iceland, summer 2014. The colours and numbers of the lines refer to the different bus systems, operators and local connections in the country. More at publictransport.is
You can download the PDF-version (9 mb) here: Cycling Iceland map summer 2016
Download the Campsites in Iceland bochure here: Campsites PDF