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Das Team der Transport-Fever Community
Greetings all!
Learning textures now, my modelling and coding have improved enough to get by, largely thanks to you guys and your amazing support! So thank you for that! 
What causes this diagonal lines on corners? Do I need to get better at unwrapping with blender? Is it a poor AO or the like?
Cheers all
Hi Bhaal,
You can't do anything about these diagonal lines.
That's just the shadow looking bad on this one because the sun is shining exactly parallel to the edge.
Thus the game does not quite know whether there is a shadow or not. That's why these line effects appear.
But this simply affects all models, not just yours.
Simply ignore it. 
What Grimes said.
If this annoys You though, You could consider rounding out the part a little more and minimize the effect a bit. As it is now, You use 2 rectangles for the curve - if You slice them vertically, You´d get two more vertical lines that You could move outward and a tad forward to "break" the angles and help the smoothing that You have obviously applied to the part. This will probably increase the part count by about 20 parts all over so should be negligible.
Ahhhh thank you both! I'll add a few more faces to it for the up close lod and leave it for the low detail one
Thanks you both.
