One was landing while the other was taking off on the same runway.
One caregiver may accompany their elderly or wheelchair-bound ward during the event.
The incident, which happened at a hotel near Woodlands Checkpoint, left a Singaporean family of four shaken.
She is advised to undergo surgery to remove a bladder stone.
The woman reportedly spent two weeks at the underground accommodation.
The project has been estimated to cost up to S$28.8 billion.
They rushed out about 300 dumplings a day to meet the high demand.
He was apprehended during an undercover police operation.
A source alleged that food hygiene practices were not carried out at the fair.
This is the fourth accident involving a public bus in four days.