What is the maximum allowable speed in other tracks in Harrison Yard according to Rule 102?

The maximum allowable speed in other tracks in Harrison Yard, according to Rule 102, is set at 12 MPH. This speed limit is established to ensure safe operations within the yard, taking into consideration factors such as potential worker presence, equipment movement, and the proximity of other trains. The designation of 12 MPH aligns with industry standards for yard operations, which prioritize safety over speed, thus minimizing the risk of accidents or incidents as trains maneuvering in close quarters are often required to stop or adjust quickly.

Lower speed limits, like those found in the other choices, would apply in different contexts or specific areas where the risk factors might be elevated due to additional hazards, but Rule 102 specifically allows for a maximum of 12 MPH on the other tracks in Harrison Yard. This provides a balanced approach to maintaining efficiency while ensuring that safety protocols are upheld, allowing for safe operations without unnecessary delays.