Four people were killed and 20 others injured when a bus collided with five cars and plunged off a bridge onto railway tracks on Friday.
Two passenger trains collided on Monday in central Austria, killing one person and injuring 22 others, the police told AFP.
The tanker, carrying 136,000 tonnes of oil condensate, caught fire following the collision and its crew of 30 Iranians and two Bangladeshis were missing.
The Gotthard road tunnel under the Alps in Switzerland was closed for hours on Wednesday after a truck and a passenger car collided, killing two people and damaging the key transit route, police said.
Ten US sailors were missing after a collision between a destroyer and a tanker east of Singapore , the second involving a US warship and a merchant ship in Asia in about two months.
Ten US sailors were missing and five injured early Monday after their destroyer collided with a tanker east of Singapore, the second accident involving an American warship in two months.