How can i create road this style

Hello there. As you can see this youtube video. I want to create roads in this style. I can’t create curve.

Look into splines. There are some good free tutorials with code for this.

E.G.
https://www.youtube.com/results?search_query=sebastian+league+curves

Splines are the way to go, but if you cant: Using a plane with curved sides would be the most performant. Then add reflective surface, glow/lighting up to you.