It’s a driver’s responsibility to make sure the car they are driving has a clear field of vision. That means there must be no obstructions, no dirt, debris or rainwater obscuring the view of the road ahead. Hence the invention of wiper blades. They are there to remove obstacles from the window and if they’re not working correctly, or you choose not to clean the windscreen, then you could be fined. Even worse, you may cause an accident
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