I finished working at this asset. Now it works quite stable.
Works for any type roads intersection (T-type and Cross intersection), and stable results works for not more than 5 roads intersections.
Roads can be any width, and not just in one plane. In this examle roads has 2-6 lines. Asset also generates side roads, parkings, sidewalks with grass and borders, traffic lights with road signs, street lights, advertising boards.
You can order it here: https://www.turbosquid.com/FullPreview/Index.cfm/ID/1607927
Music by https://www.bensound.com/

Бесплатный вебинар о том, как создать железнодорожную развязку в Houdini.