Texture Paint Street-Markings in Blender (Patreon)

(Right click, save as- preview below)
Road Textures

This is a simple technique, I just also get distracted with tweaking the shader (although, the part at 22 minutes about making the different symbols/graphics could be kind of fun if you don't normally use Blender in that capacity?)

ALSO! The bit at 9:10 is important! I probably don't talk about saving enough, but blender will often not try very hard to save your painted textures! I recommend doing it by hand, just to be safe. (sub-also: check out how much confusion I caused myself by forgetting to put in the name of the UV map at 6:45, hot damn).

But yeah, I've just gotten myself frustrated before trying to find an image texture of, say, a parking lot with the right scale/layout that I wanted, so it's nice to be able to quickly just stick all the lines down myself.

(Actually, this technique could also work the exact same way with graffiti. Could be useful to make a bunch of random tags at some point for decking out a scene; could work better than shrink-wrapping a bunch of random planes!)