Subway trains collide in HK during trial

New signaling system being tested at crossing; no passengers were aboard

Two train captains were sent to the hospital in Hong Kong, one with a leg injury, after two subway trains collided on Monday morning after a signal failure. No passengers were on board.

The incident occurred during ongoing trial runs for a new signal system. It was said to be the first collision since the operator started providing services in the city in 1979.