Two trains collided in Indonesia’s West Java province on Friday, killing four people and injuring almost 30 others, rail officials said. The accident happened when a long-distance train from the country’s second-largest city, Surabaya, collided with a commuter train near Bandung, the provincial capital, said Adita Irawati, spokeswoman for the transport ministry. The two trains carried a total of 478 passengers, Irawati said. The cause of the collision is still under investigation, but some reports suggest that a signal failure may have been the reason. Train accidents are not uncommon in Indon…