Now we're all set to start drawing our map. Select the Pen Tool from the Tools panel and start drawing all the streets as single lines including the railway. For practical reasons I've selected no Fill and a black Stroke of 1 pt. As you can see from the image above, I'm drawing these lines in the centre of the streets. You also notice that I connect the small roads to the bigger ones. This isn't needed. It's actually better that you don't touch the big ones, and leave a bit of a gap in between. This way you might be skipping some retouching work (see the part Retouching further in this article). It's only when I got so far already while I was composing and writing this tutorial, that I came to this conclusion, and it would have taken me too much work to redo all the steps.