Photos: Swiss passenger trains collide head-on, around 40 injured

Rescue personnel work at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police say at least 44 people were injured, four of them seriously. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

Rescue workers transport a wounded person on a stretcher after a head on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland, July 29, 2013. The two trains collided at Granges-pres-Marnand in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

Rescue personnel work at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Numerous people have been injured. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

Injured passengers are helped at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police say at least 44 people were injured, four of them seriously. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

Rescue personnel work at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Numerous people have been injured. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

Police officers and rescue workers are pictured at the site of a head on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland, July 29, 2013. The two trains collided at Granges-prËs-Marnand in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse (SWITZERLAND - Tags: DISASTER TRANSPORT) ( SWITZERLAND-CRASH/ )

A signal shows red light as a police officer works at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police says that 44 people have been injured. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

A police officer works at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police says that 44 people have been injured. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

A rescue worker stands near two Swiss regional trains after a head-on collision near Granges-Pres-Marnand near Payerne in western Switzerland July 29, 2013. The two trains collided in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

Police officers are pictured at the site of a head on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland, July 29, 2013. The two trains collided at Granges-prËs-Marnand in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse (SWITZERLAND - Tags: DISASTER TRANSPORT) ( SWITZERLAND-CRASH/ )

A policeman works at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police say at least 44 people were injured, four of them seriously. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

A police officer looks at the damage after a head on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland, July 29, 2013. The two trains collided at Granges-prËs-Marnand in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse (SWITZERLAND - Tags: DISASTER TRANSPORT) ( SWITZERLAND-CRASH/ )

Rescue workers are pictured at the site of a head on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland, July 29, 2013. The two trains collided at Granges-pres-Marnand in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

A collision of two trains on July 29, 2013 in Granges-pres-Marnand, Western Switzerland. Two trains collided head-on, injuring 40 passengers, at least five of them seriously, police said. AFP PHOTO TDG/24 HEURESHO/AFP/Getty Images ( 521736681 )

A fireman works at the site where two passenger trains collided head-on in Granges-pres-Marnand, western Switzerland, Monday, July 29, 2013. Police say at least 44 people were injured, four of them seriously. (AP Photo/Keystone, Laurent Gillieron) ( Switzerland Train Collision )

A rescue worker walks at the site of a head-on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland July 29, 2013. The two trains collided in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

Rescue workers are seen at the site of a head-on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland July 29, 2013. The two trains collided in the Swiss canton of Vaud on Monday evening, injuring about 40 people, four seriously, Swiss news agency ATS reported. There was no immediate report of any deaths in the crash. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

Swiss Federal Railways (SBB) staff remove carriages at the site of a head-on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland July 29, 2013. The two trains collided head-on in Switzerland on Monday evening, injuring about 35 people, five seriously, police said. The driver of one of the trains was still unaccounted for and thought to be inside the wreckage, at Granges-pres-Marnand in the canton of Vaud, police spokesman Jean-Christophe Sauterel said. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )

Rescue workers are seen at the site of a head-on collision between two trains near Granges-pres-Marnand, near Payerne in western Switzerland July 29, 2013. Two trains collided head-on in Switzerland on Monday evening, injuring about 35 people, five seriously, police said. The driver of one of the trains was still unaccounted for and thought to be inside the wreckage, at Granges-pres-Marnand in the canton of Vaud, police spokesman Jean-Christophe Sauterel said. REUTERS/Denis Balibouse ( SWITZERLAND-CRASH/ )