What is the maximum coupling speed allowed?

The correct answer indicates that the maximum coupling speed allowed is 4 MPH. This limit is established to ensure safety and reduce the risk of injuries or equipment damage during coupling operations. Maintaining a lower speed when coupling helps to avoid sudden impacts that can occur at higher speeds, which can lead to operational hazards.

In the context of railway operations, coupling involves connecting two rail cars or units together. If this process occurs at excessive speeds, it can result in miscouplings or accidents, which not only pose risks to personnel on site but also can cause damage to the rolling stock or infrastructure.

By adhering to a maximum coupling speed of 4 MPH, crew members can perform the task more safely and efficiently, allowing for better control of the equipment involved. This speed limit reflects standard practices within the industry to prioritize safety during essential operations.