The phrase 'aboard the train' is correct and usable in written English.
You can use it to describe people or objects that are on the train, for example: "The passengers aboard the train began to disembark."
Though, to be clear, we will never be aboard the Train train.
The mood aboard the train reflected that sentiment.
At this point Delmar manages to struggle aboard the train.
"The rail operators tangle with these ladies at their peril," says a man aboard the train.
Some aboard the train on Tuesday kept their faces buried in books, iPhones and Kindles.
Mr. Sherif estimated the number aboard the train at about 1,200.
Officials said they did not know how many passengers were aboard the train.
All those aboard the train were employees of national railway operator SNCF.
Back aboard the train, it turned out that the technology was trustworthy.
What they need to get aboard the train to Britain's future, even more than a fare, is self-confidence.
Both they and Mr. Stessel said that the note did not explicitly threaten passengers aboard the train.
