Where is kicking cars permitted?

Kicking cars is permitted in authorized locations where specific safety protocols are followed, ensuring that it does not pose a risk to employees, equipment, or the contents of the car. This stipulation reflects the importance of maintaining a safe working environment for all personnel involved in switching operations. It acknowledges that even within designated areas, the decision to kick cars must be made carefully, considering the potential hazards.

While it might be possible to engage in this practice in designated switching yards, limiting it to only those locations does not encompass all scenarios where it might be safely executed. Furthermore, kicking cars on the mainline track or according to a crew's subjective feeling of safety could lead to unsafe situations, which the regulations aim to mitigate. Thus, the correct response emphasizes the necessity for authorized locations and rigorous safety standards in the practice of kicking cars.