In EMR land, the wipers on the 222 fleet are a pain. Noisy and squeaky, with the blades tending to wear more in the drivers line of sight, leaving you with the sight of a semi-circle of insects and pigeon goo all the way. At least there are still long handled brushes available at Derby and Leicester to help.
There can also be an issue of wind lifting the blade from the windscreen. Possibly caused by fatigued springs maybe? Perhaps an increase in the frequency of arm and blade renewal would be beneficial? I'm not even sure if there is a set renewal frequency, and that they just wait for the wipers to be reported?
That said, the wipers on HSTs and 180s always seemed to be pretty decent. Maybe "upward pointing" wipers are more efficient than "downward pointing" when it comes to aerodynamics and screen contact?