I hope it is not long before they review the lights timing and road layout on this roundabout.
Travelling back from work last week and it let 4 vehicles at a time through from Durham way heading south towards Ferryhill, then let around 30 or more to come around the roundabout, sitting for while on green for them when there waas nothing coming around from Spenny way or turning right from Ferryhill, before letting another 4 vehicles through from Durham way. It took 4 lights changes before getting through them.
Also they have 2 lanes heading north from the roundabout restricting those heading south onto the roundabout only 1 lane until you get close up to it which then turns into 4 lanes, why not have one lane off the roundabout and two lanes from Durham onto it splitting into four. It means there is long queues of traffic, some wanting to turn right but cannot get into their empty lanes because of the traffic coming the other way.