Its hard to believe,but some drivers seem to be absolutely DETERMINED to bring problems upon themselves by fitting something that was not asked for, or made compulsory by the NTA.Unfortunately they might have brought the rest of us unwilling participants down the same road, in a bid to excede to the wishes of their lords,and masters namely F,N ,and Ebbs.my own belief is however,these unnecessary screens will NOT feature for very long,and will be discontinued when the few drivers who have fitted them,realize there is neither demand,nor desire for them,and the drivers will count the costs of their loyalty to the people in the ivory towers working from home who instructed there instillation in the first place