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People ask me about the dimensions of the roads. How close can the road halves be together? what about the corners?
In this article I'll describe a practical way to construct a two-lane road and give some examples of how to construct a corner.
Basic dimensions
The minimum radius I use as a practical average is 200 mm (7.9 inches). The real minimum is about 150 mm (5.9 inches). When you only drive with short vehicles it is acceptable but when mixed with long trailers or busses there may be trouble.
In this picture you can see the colour codings I use:
- Green is the outer limit of the road where the grass or curb starts. You may want to add a bicycle lane here.
- Yellow is the guide wire.
- Blue is the centerline of the road where the dividing line will be painted.
