This Forum is really a hatefull place...
No, it isn't that bad.
It's just that I (and probably Eddi with me) get really annoyed if people add
 unnecessary white space to an image with no reason whatsoever than just being too lazy to operate the graphics program properly. Actually I think you should apologize to Owen for wasting his bandwidth like this.
And no, nobody forces me to open the image. But from your post there's no way to know that the excess white is there, so I have to open the image to find out.
also i just can t believe someone spend some time writing this :
so he spent three clicks to add the white area and make the file ten times bigger
If I actually wanted to add unnecessary white, it would cost me considerably more effort than when not adding it. Hence, I've drawn the conclusion that would apply to you as well.
@Leanden: Apologies for this nonsense in your topic. I proably should have been the more mature one here and just ignore/not reply, but I really couldn't resist. Goes to show how much I get annoyed by people wasting my time by not caring the slightest about what they do. Please accept my apologies and continue you efforts making a great road set even better. Any chance for OpenGFX support?
 Yes, add. May it be not on purpose, you did add the white as the original image didn't have it.