Thank you so much! That's just the information I needed. I had not tried right-clicking on the items in the road tool list. When you said I'd have to edit them, I thought you meant in S3pe, so that's where I was looking to try to find some way to do that. Needless to say, I wasn't getting anywhere.
I was going to download the files from the link you gave me, but it has a huge warning about reading all instructions before downloading anything, which kind of scared me off, because there aren't any instructions on that page, or any link to any. So I wasn't sure if he meant just the usual instructions for downloading CC or if there was some special information I would need for those particular files. I also wasn't sure where to put them once I extracted them, until I read the tutorial. I guess I need to extract them, then us S3pe to export them into my world file, right?
And yes, you are correct. When I chose the Ranch Asphalt for the road, the road section I laid down did not match the existing roads, but was identical to the ones that place with the Base Game Road selected.