What is the correct function of turn signals checked during an inspection?

The correct function of turn signals during an inspection is that they must be operational and visible from a distance. This ensures that other drivers and road users can clearly see the intentions of the vehicle operator when making lane changes or turns. Visibility from a distance is crucial for safety, as it allows for adequate reaction time from surrounding vehicles and pedestrians. If turn signals were not visible from a distance, it could lead to misunderstandings and potential accidents. Ensuring that turn signals function properly and are visible encompasses both safety compliance and effective communication on the road.