Question

If a train operator sees a yellow sign with 20 miles on it, and also sees a set of caution lights or flags on the track, at what speed must he go

Answer 1

A train operator seeing a yellow sign with 20 miles on it along with caution lights or flags should reduce the train's speed to 20 mph or lower depending on the safety requirements indicated by the caution signals.

Step-by-step explanation:

If a train operator sees a yellow sign with 20 miles on it, along with caution lights or flags on the track, it typically indicates that there is a speed restriction or warning that the train should slow down. The exact speed the train must go can depend on the railway company's rules, the country's regulations, and the specific situation. Generally, the yellow sign indicates a recommended or enforced speed limit that should be adhered to, which in this case is 20 mph. Caution signals usually require the operator to prepare to stop or proceed with caution, potentially at a speed lower than the usual track speed limit. Therefore, the train operator should adjust the speed to 20 mph or whatever speed is deemed safe under the circumstances, as indicated by the caution signals or flags.