What is the maximum speed permitted when entering a main track between signals?

The maximum speed permitted when entering a main track between signals is restricted speed. This speed limit is in place to ensure safety when train crews cannot see signals or the condition of the track ahead. Restricted speed allows for a controlled and cautious approach, enabling train operators to stop within the range of vision, thereby minimizing the risk of collisions or encountering obstacles.

Normal speed, high speed, and maximum speed typically refer to the usual operational limits under clear signal conditions, but when a train enters track sections without specific signal guidance, the focus shifts to safety, making restricted speed the appropriate choice in these scenarios.