Use of vehiclesQuestion #16278
When is it forbidden to drive a motor vehicle in rain, snow or fog?
Explanation
The traffic rules name specific defects you must not drive with. One of them is a windscreen wiper that does not work on the driver's side in rain, snow or fog, since it directly affects what the driver can see and creates a serious safety risk.
KET reference: KET 234.4: driving is forbidden if, in rain, snow or fog, the windscreen wiper on the driver's side does not work.