Part 2
Deformpath

using the same method as part 1 snap and clone the straight part say 50 times


Now you should have a long peace of road
with the first peace still selected , right click and click attach.

and attach all the straight peaces of road so you have 1 long peace of road



Now we are going to make a line for the road to follow.

in the top right corner click as below



next in the spines drop down box, set smooth as the initial and drag type as below



now using the line tools design the path for your road
ive made a simple oval shape, when finshed close spine



Now the fun part,
select the long stretch of road we made before
and in the top right corner click as shown below



next click pick path and click the shape we made with the line



now in the path deform box , click  Y  and then  stretch till the road Just meets



once your happy and the road ends are close, right click on the road and convert to mesh



now in the modifier list in top right corner click vertex



zoomin on the gap in the road, and with snap on ,snap each vertex into place to fill the gap,



once you done that, zoom out and press F9 to render. you  should see as below



combine this and part 1 together and you can make streets and tracks for your game in no time.

Part 3 Exporting to 3drad