Street labels at intersections are (sometimes often) crazy

[bmount]

SF official streetline dataset (and census/tigerline to which AFAICT it is identical) includes centerlines for each direction of streets divided by medians, and then those centerlines are joined into one where the median ceases at intersections. This means that just using the direction of the street centerline to orient labels leads to weird geometries at large street intersections (such as in the default San Jose/Guerrero location.)

Generally in order to align the unit vectors of street labels with streets a lot more checks need to be done in the function here: https://github.com/bvmou/cityedit/blob/master/mapcouchapp/templates/editor.html#L294

Maybe sanest thing is to do is generate a separate file with just the intersections, names, and orientations of streets. It should also be a lot easier to simplify this than the curbline datasets which also lead to those overly complex geometries at rounded curbs and medians.