Did the taxi driver tell you it was your fault, because rule #1 is never believe a taxi driver, they know sh!t and talk out their @rse!!! Go back and review the scene yourself... take shots of the road ASAP, see the road markings and make sure you could turn right from the middle lane. By the sounds of it you may well be able to there. Most of all... never ever say you are at fault until it is proven!!!