Final answer:
The lone worker can find the speed limits of trains on a section by referring to the train's schedule or consulting railway regulations or guidelines.
Step-by-step explanation:
The lone worker can find the speed limits of trains on a section by referring to the train's schedule or consulting railway regulations or guidelines. These sources provide information on the authorized speeds for trains based on factors such as track conditions, curves, gradients, and proximity to railway stations or level crossings.