What does the PROCEED WITH CAUTION indication mean for train operators?

The indication "PROCEED WITH CAUTION" is critical for train operators, as it requires them to operate at a reduced speed, allowing for the possibility of stopping within the distance they can see ahead. This approach ensures that operators maintain a higher level of awareness and readiness for any hazards or track changes that may not have been previously anticipated. Operating slowly helps to prevent accidents and ensures safety in situations where conditions may change unexpectedly.

In this context, the choice accurately reflects the need for caution and the importance of being able to react quickly if necessary. The emphasis on stopping within the range of vision is crucial, particularly in scenarios such as encountering obstacles or unexpected track conditions.