Verify out these rapid prototype service images:
Semi-curb?
Image by warrenski
There’s a tiny section of road (corner of Otto Du Plessis Drive (R27) & Greyton Road) along the IRT corridor exactly where you can see the inital laying of a new kerb, pictured here on the left of the image.
Image by warrenski
Looks like the perform accomplished on a demonstration kerb, has now been undone.