Sir, I wonder when Oxfordshire County Council will learn that yet more traffic lights, road furniture and signs are not the answer to the county's congestion problems and are, in fact, making things a great deal worse.

The new Eynsham bus-priority lights are already causing major tailbacks along the A40, a vital trunk road.

So, on this vital trunk road we now have the Eynsham lights, the Cassington lights, the Eynsham roundabout and the Wolvercote roundabout with its suicide lane markings. Each one is a major traffic block and a congestion catalyst. And the buses are just as held up as the cars.

My prediction is that the new Eynsham lights will start diverting traffic through both Church and Long Hanboroughs, and probably through Eynsham village too. Possibly not the desired effect, but one that will be very real and felt keenly by the villagers.

Neil Duncan, a research scientist from the Transport Research Laboratory, used to say traffic adapts to make optimum use of the available space/time, unless prevented from doing so by controls or regulations. In other words, the more you fiddle, the worse it gets.

It won't affect me greatly on either my cycle or my motorcycle, but it will affect thousands of people using that stretch of road, the people who will suffer from diverted traffic and the increased pollution caused by yet more stationary cars.

Mark McArthur-Christie, Bampton