ABSTRACT
Kerbs 1 Raised or upstand kerbs, defined as kerbs with a vertical upstand of 25 mm or more, are the normal form of edging between pedestrian footways (pavements) and vehicular carriageways (streets). People who are blind (qv) or have severely impaired vision (qv) use them as an essential warning device that they are about to step onto a carriageway. Raised kerbs have the disadvantage that they obstruct wheelchair users (qv). 2 Dropped (also called flush or level) kerbs are set flush with the carriageway, or have a maximum upstand of 6 mm with a rounded bullnose edge in order not to obstruct wheelchair users. A length of dropped kerbing should be provided wherever wheelchair users may wish to cross a carriageway. The presence of a dropped kerb must always be indicated by blister-surfaced (qv) pavings to warn blind people that they are about step into a carriageway.
