What is a necessary feature for track cars moving between work locations?

A working radio is essential for track cars moving between work locations because it facilitates communication between crew members and with other trains or dispatchers. Effective communication is critical for ensuring safety on the tracks, especially when track cars are operating in close proximity to other trains or maintenance activities. The ability to quickly convey information about location, any observed hazards, or operational changes can prevent accidents and improve coordination.

While an extra crew member, GPS tracking, and speed limit compliance are also significant considerations for operations, they are not strictly necessary for the fundamental safety and functionality of track cars. For example, while having an extra crew member can enhance safety and productivity, it is not mandatory for all situations. GPS tracking can help with navigation and monitoring location but is not a basic requirement for moving between work locations. Compliance with speed limits is crucial for all rail operations, but the presence of a working radio specifically addresses the immediate need for communication and coordination among trackside operations.