Hi, rizkynggakool.
Nice script, but i canĀ“t get it work. IĀ“m running on SU2015, and i got a big errormessage with a lot of content. It seems to expect something. In the description
you mentioned a dependencie with "offset.rb" - incuded. I can not find it anywhere. 
May be that this is my problem ??
Greetings ...
Hallo Eneroth.
Now that I'm back from a bad cold the last weeks, i'm follow your instructions.
But without a good result, with exeption, SU doesn't crash anymore after useing
the streets. How ever, i don't have any primitves of the streets, only the leadinglines.
Greetings ..
Ralph
Hallo there...
ItĀ“s a great plugin at all. Big thanks vor this. It saves a lot of work.
But i have a question. I can not get the additional Streets working. I put them
into the Tracksfolder. The only things i got are the leadinglines and SU2015 starts crashing. All the othes stuff works fine.
Greetings
Ralph