I know it's alot to ask, but I was thinking of a modular set of road items. And by road I don't mean default TM road I mean this type:

You could do a variant with sidewalk and a variant without. It's alot but I'm sure plenty of people could use it. There should be turns and such, but you don't even need to include banked if you dont want to. I would use a texture mod but that wouldn't work for things like intersections and such.

If this already exists, send me it please. Thanks!

Which game are you requesting this road for and which environment? I like more realistic looking roads and this was something I was aiming for when I did a mod for TM Stadium years ago called Urban England. Now that we can make 3D models to put ingame I'm guessing this is something that can be made even better.

TM2020 Stadium. I decided to try and make the models myself but it's gonna take a while lol

I have all the Trackmania games but my little laptop doesn't run TM2020 very well but if you need any help please ask. If I don't have to race on some big track then I can do most things in TM2020. I did read that you might have to make a mod to add textures to your blocks. This is all good until your mod doesn't load for people. Personaly I would try and manipulate the original textures and use them. Also if you're making a completely new road I would think about making a block called old to new and try and make a block that will nicely connect the original road to your new road.