Re: ‘Sending the right signals' (The Weekend Sun, December 9). The intention of indicating – as stated in the ‘Road Code' – is to tell other road users that you are changing your direction or position on the road, not just to satisfy a particular requirement in the Road Code. Perhaps letter writer S Carter, along with many other drivers, should also note that the ‘Road Code' under ‘signal use at roundabouts' also requires signalling left 'as you pass the exit before you pass the one you wish to take”, and this applies whether one is going straight through or going further around the roundabout. It is this last requirement signalling left every time you exit from a roundabout – whether it's the first exit or any subsequent one – that is most important in creating smooth traffic flow through roundabouts. If a driver does not signal left, the person waiting at the next entry point just has to wait, on the basis that either the person is going further around the roundabout, or has just forgotten to signal left. Unnecessary waiting is what causes delays to traffic flow.

N Hall, Papamoa.