Should a seller disclose an infrequent train at a home sale?

Question: In a recent column, you said that a buyer’s broker had to reveal a gun range nearby, even though the gunfire noise was only bad in the winter months. So you recommended that a broker only sell homes in a community that the agent “exploits” (ie, a community where the agent sells homes frequently). Whether you’re right or not, I understand your point. Years ago, I showed many potential buyers a home in West Valley. The seller’s property disclosure statement said nothing about a train running directly behind the back fence. Neither of my potential buyers nor I ever heard a train. However, after one of my buyers bought the house, he woke up to the sound of a train the first night in the house! The seller said the train only comes “a couple of times a day” and the buyer never complained again. My question is, can a broker be liable to a buyer for not disclosing a train that comes only twice a day?