Long continue
Intermittent
Three short
Three long
Answer is Wrong!
Answer is Right!
The correct answer is: C. Three short
The whistle code for approach on W board is three short blasts. This code is used to warn the driver of the approaching train that there is a danger ahead. The three short blasts are given at intervals of about one second.
The other options are incorrect. Option A, long continue, is the whistle code for approaching a station. Option B, intermittent, is the whistle code for approaching a level crossing. Option D, three long, is the whistle code for danger.
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