bump
Sorry for the long delay, I got distracted. Anyway, all straight lines are now made. Here are some shots of what I got:

All lines so far

These lanes are now correctly 16x bricks wide


And here is a demonstration of the use of 2 1x wide lines for a middle, double line. The two outer lines are 2x wide lines. It just occurred to me that I should have covered the entire shoulder area instead of leaving a 1x wide strip of road, and added that 1x strip to the road verge, oh well.

Passing/no-passing lines using 32x1 dashed and solid lines.
Now that all of the straights are done, I can move on to the hell that will be curves!
I put up a poll because I was thinking of trying to reduce the size of the pack and number of bricks by only allowing the lines to change color, not the street. So vote for what you guys think. I myself usually only use a single shade of road throughout an entire build, unless I make some kind of beach area, then I like to make the roads off-white.
[EDIT]
I made an oopsy. So because I used the SIDE texture for the lines' elevated-lookingness, the shadowing doesn't change depending on orientation of the brick, so that will create ugly places. I now have to look into using the TOP texture, which will hopefully rotate the shadow correctly.
I noticed this hiccup while working on the first curve:
