Thank you for next nice comments and Corona Team for introducing my work on Corona official FB page! :)
I'm sorry for a delay in my response. I'm quite busy last days :)
Here is a screen with the road main layers. The main trick is that I rendered two versions of the wet surfaces. One dry ( without textures on the road ) and simple wet road surface and pavement as well. I added id channel for the road of course and used it as a mask in photoshop between dry and wet rendered layers. The additional reflection layer is very important too. With this layer it's possible to better controll reflections effect in postproduction. Strenght of the reflections or even you can blur it in photoshop to change glosiness effect. Finally I painted hand made trails to precisly make a car trails as a wet traces. That's all :)
For the tarmac texture sometimes I use regular tarmac texture in hi resolution and I try to distort it consistent with rendered perspective but sometimes it's better to find nice photo with nice tarmac recorded in perspective also in hi resolution and use it as a something like ready to use part of the road. Ready to use photo is better when the distortion of the regula texture is to big to achieve a nice effect or it's complicated.
Adding the road marking is more easy. I use just road stripes in hi-res and distort it once or in a few steps to achieve final shape.
Layers description from the top:
- dry main render version
- mask for the road
- wet road reflection pass
- wet road render ( I use region render for that )
