It's not always intentional especially when much of the provision is badly-designed (including timing of the lights i,e, changing too quickly), and badly-maintained. Unless someone does this on purpose I just let it go because life is too short. If someone is doing it to be an ass-hole try to stay behind them or if you have to, filter in front and take the lane. Video camera's are also useful to all road users.. too many nutters about. Take care.
Who is this