The speed cameras do work on the long straight roads. 2,000QR down I can vouch for that! The cameras also seem to be working on the red lights although it means Land Cruisers doing emergency stops on amber now, almost as dangerous. It isn't just about signs though, remember that the construction sites in themselves are dangerous if they don't follow Health and Safety. We shouldn't expect men to work in this environment just because they are poor. At Sport r/a the other day, a guy on a rostrum changing the bulb in a street light, no cones, traffic just pouring past him making the structure wobble but don't worry, another man was holding it for him. With wing mirrors clipping him as they shot past!