The new line would involve new track from Granton Square to link up with the existing line through the city centre and then more new track down the North Bridge corridor to Cameron Toll and on to the Infirmary and BioQuarter.
The section between Crewe Toll and the city centre could follow one of two routes - one of the key issues in the 12-week consultation now under way.
The tramline could use either the Roseburn Path pedestrian and cycle route, linking up with the existing line before Haymarket; or the alternative option of going via Crewe Road South and Orchard Brae, crossing Dean Bridge and joining the existing line at the west end of Princes Street.
Here is a look at the proposed stops along the way - including both the Roseburn Path and Orchard Brae option. The pictures do not necessarily reflect the precise location proposed for each stop.
21. BioQuarter
Edinburgh's BioQuarter is an important centre for Scotland's life sciences industry, employing thousands of people. There is plenty potential for expansion and the improved transport links offered by the tramline are seen as key to attracting investment and new jobs. And beyond the BioQuarter, the tramline could continue into Midlothian, with a link to Shawfair station, or to East Lothian and Queen Margaret University. | Google