Honestly, I think the rounded rectangle is best for state roads; although they should be, not all state shields are as easy to read, which is a problem on the limited resolution of a map. U.S. and Interstate Highways and county roads should definitely use different shapes - the actual ones, perhaps simplified slightly, are fine. But for state roads, shields like Colorado's and Louisiana's squish the number into too small of an area.
[edit] It would also be nice to see shields placed by relations, so they can be better-spaced (right now, a route split into many ways will have more shields than one represented by one way). I understand this is being worked on but there have been a few problems.
Discussion
ایہہ 18؍January 2010ء 01:44 تے «JohnSmith» ٹپݨی کیتی گئی سی۔
In terms of reference tagging etc, did you see my custom highway page?
osm.wiki/Custom_Highway_Shields
ایہہ 18؍January 2010ء 05:06 تے «NE2» ٹپݨی کیتی گئی سی۔
Honestly, I think the rounded rectangle is best for state roads; although they should be, not all state shields are as easy to read, which is a problem on the limited resolution of a map. U.S. and Interstate Highways and county roads should definitely use different shapes - the actual ones, perhaps simplified slightly, are fine. But for state roads, shields like Colorado's and Louisiana's squish the number into too small of an area.
ایہہ 18؍January 2010ء 05:07 تے «NE2» ٹپݨی کیتی گئی سی۔
[edit] It would also be nice to see shields placed by relations, so they can be better-spaced (right now, a route split into many ways will have more shields than one represented by one way). I understand this is being worked on but there have been a few problems.