Cyclists crossing London Road from South to North at the Green Road roundabout are faced with an extremely tight ninety degree turn into a very narrow space because a signpost is blocking the middle of what should be a cycle lane. This sharp turn onto a narrow space is virtually impossible to negotiate without stopping cycling and using your foot to push your bike. It is also very difficult to align the bike to cross the next lane in the extremely narrow space available. it is impossible with a cargo bike.