I agree that intimidation is very disagreeable, but one does not have to be a windscreen wiper to intimidate people.
In other words, one might be stopped for a windscreen wiper offence and find, the policeman having smelled one's breath, that one is breathalysed.
If only one windscreen wiper in 10,000 is damaged by this process, it is one too many.
The real answer is to have water which comes on to the wind screen and the windscreen wiper goes across it.
The material is litter while it is under the windscreen wiper.
There are occasions when a windscreen wiper will become defective.
But on many vehicles it is not practicable and on others it is unnecessary to fit more than one windscreen wiper.
For example, in a windscreen wiper system, achieving slow wipe when fast wipe is expected is not as bad as the wipers not working at all.
