There’s a bug fix.
In the graphic above you can see:
There were different road widths before.
Additionally you can now create a wall. There are now
g.createWall = THREEEg.createWall;
g.createWall( curvePoints, lengthSegments, sidesDistances, widthDistance, hightDistance );
Internally, wall (with up to four sides) and street (area) are implemented with the buildRoadWall( ) function.
Try there: http://threejs.hofk.de/WallTHREEg/WallTHREEg.html
Just updated at GitHub. 