Hi, I created this street mesh in Blender:
(object mode)

(edit mode)

When I import it to godot it looks like this:

Why does it look so bad? The colors are not the problem, I didn't even try to match them yet.
Here are the export settings I used of the "Better Collada" exporter:

I used the default import settings from godot 2.1.4 stable. I tested with Godot 3 too, same error.