There is one in High Wickham too, near the bottom of Marlow hill - I've never had any problems with it.
Car drivers are a strange lot though, some keep well clear of me in the 26 tonne, 32 feet long Hiab lorry - others simply DO NOT want to be behind a lorry and will get past you in some of the most dangerous places ( roundabouts, double white lines, blind corners, etc )
Apparently, if there is a double white give way line going onto the roundabout then you have to give way - if there is a single white give way line then you have priority over the double whites, even if they are on the roundabout first.
This is untested though
