必须认真考虑和评估驾驶员允许的前向视野。这是非常必要的，因为能见度差会增加发生事故的可能性。测量和评估必须由电梯设备的制造商执行，并且必须遵守当地法律。

        The forward visibility allowed for the driver must to be seriuosly considered and evaluated. This is very necessary since poor visibility increases accident possibilities. The measurements and evaluations have to be performed by the manufacturers of the lift equipment and have to comply with the local laws.