She apologised and immediately moved to an empty seat in the front row.
It was a "freak accident", said Home Affairs Minister K. Shanmugam.
The 66-year-old woman was sent to the hospital due to bleeding.
Bridging buses were activated during the disruption.
It has a lengthy 92 years and one month left on its 99-year lease.
The driver of the lorry involved left the scene before the police arrived.
The accident caused eight bus services to be diverted.
The first fire involved discarded items along the common corridor, while a six-year-old boy is suspected of starting the second…
"This particular idea is still at a very early, exploratory stage and nothing has been confirmed," GovTech said.
A portion of proceeds from the ticket sales will go towards animal welfare initiatives.