What does a track warrant authorize within designated limits?

A track warrant is a specific type of authorization used in the operation of trains on railroads, particularly for the Maintenance of Way (MOW) personnel. It provides permission for the designated employees to occupy and work on a main track within specified limits.

This means that when a track warrant is issued, it identifies the exact stretch of main track where work activities can occur, ensuring safe operations and clear communication among personnel. This level of authorization is critical because it ensures that the main track can be safely used for the intended purpose while minimizing the risk of accidents or conflicts with train movements.

The other options reflect different scenarios or limitations that do not align with the function of a track warrant. For instance, occupying sidings, working on secondary tracks, or accessing stations does not fall under the authority of a main track track warrant, highlighting the specific nature of this authorization and its importance in maintaining safety and operational efficiency within the railway system.