Already I'm wanting to add a line with a 90 degree angle, like a "corner" piece to connect other lines with. Not sure what it'll be called.

I'm also thinking of adding a line that runs along the edge of a block, good for bordering other blocks like crosswalks and such.

How about a roundabout tile set?

I hadn't even considered it but I love that.

Do we have a triangle in there? In the UK, a triangle on the road is often found at junctions both as a "Give Way" symbol and as an indicator as to the direction of travel in that lane (useful in some of the more complex junctions where the lanes split off into two different directions - the triangle points in the opposite direction to the flow of traffic).

Do we also have single lanes and curved corners for this one?

Also - numbers in circles (eg 40, 50) to indicate the speed limit.

Trying to keep things language independent here, or I'd suggest "Slow", "Stop" and so on.

I should definitely add a triangle. We don't use them where I live but I want the mod to feature at least all of the basics for as many different countries as I can manage reasonably.

As for numbers in circles, I don't think I can add them as their own blocks only because it'd mean adding so many extra blocks to get all the numbers and I wouldn't want an incomplete set... I might do them, but they'd be made of two blocks left and right if I did, hard to describe in text.

Thank you for the suggestions, expect the triangles soon :D