The logo of Rail Cargo Group, a member of Austrian Federal Railways OeBB, is seen on a carriage at the main station in Vienna, Austria, April 26, 2018. REUTERS/Lisi Niesner 

Riot policemen guard train tracks which are used to transport garbage, to prevent barricades from locals protesting against the new industrial waste processing facility that is being constructed in Til Til, Chile, August 15, 2017. REUTERS/Ivan Alvarado SEARCH "TIL TIL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A train, which is used to transport garbage, rides on its way to Santiago to be reloaded, in Til Til, Chile, August 7, 2017. REUTERS/Ivan Alvarado SEARCH "TIL TIL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A train, which is used to transport garbage, passes next to a local cemetery on its way to Santiago to be reloaded, in Til Til, Chile, August 24, 2017. REUTERS/Ivan Alvarado SEARCH "TIL TIL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Railway cars loaded with coal for export are seen at Roberts Bank Superport in Delta, British Columbia, Canada January 15, 2018. Picture taken January 15, 2018. REUTERS/Ben Nelms 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen on the illuminated track before the opening ceremony near the Alpine resort of Stoos, Switzerland December 15, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken December 13, 2017. REUTERS/Arnd Wiegmann TPX IMAGES OF THE DAY 

The barrel-shaped carriages of a new funicular line are seen front of mount Grosser Mythen (1,898 m/6,227 ft above sea level) during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

A skier in front of mount Grosser Mythen (1,898 m/6,227 ft above sea level) and the barrel-shaped carriages of a new funicular line are seen during sunny winter weather on a piste in Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen front of mount Grosser Mythen (1,898 m/6,227 ft above sea level) during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

The barrel-shaped carriages of a new funicular line are seen during sunny winter weather in the Alpine resort of Stoos, Switzerland December 13, 2017. Picture taken on December 13, 2017. REUTERS/Arnd Wiegmann 

A security personnel member stands guard outside a burnt carriage of a train near a railway station in New Delhi, India, August 26, 2017. REUTERS/Adnan Abidi 

A security personnel member walks past a burnt carriage of a train near a railway station in New Delhi, India, August 26, 2017. REUTERS/Adnan Abidi 

Shrubs spring up around a rusted train engine in southeast Nepal, with carriages propped up on bricks and tall grass growing over abandoned wheels in mute testimony to years of neglect suffered by an abandoned railway line. First built as a cargo line to carry wood from Nepal to India in 1937, it was once the lifeblood of the community in Janakpur. The revamp of the railway, set to be completed next March, presents clear signs of renewal and the improvements to come. REUTERS/Navesh Chitrakar SEARCH "CHITRAKAR RAILWAY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: NEPAL-RAILWAY/ 

People get on a railway carriage in Bobruisk, Belarus June 15, 2017. REUTERS/Vasily Fedosenko 

A man is seen in a railway carriage in Bobruisk, Belarus June 15, 2017. REUTERS/Vasily Fedosenko 

A train carriage is seen after crashing into a house following a derailment, in the town of Adendro in northern Greece, May 14, 2017. REUTERS/Alexandros Avramidis 

A train carriage is seen after crashing into a house following a train derailment, in the town of Adendro in northern Greece, May 14, 2017. REUTERS/Alexandros Avramidis 

A train carriage is seen through the destroyed walls at the railway station in Mosul, Iraq, April 10, 2017. REUTERS/Andres Martinez Casares 

Smoke rises up from buildings as train cars are seen in the railway station in Mosul, Iraq, April 5, 2017. Picture taken April 5, 2017. REUTERS/Andres Martinez Casares 

Priests carry an idol of Seto Machindranath into a chariot during the Seto Machindranath chariot festival in Kathmandu, Nepal April 4, 2017. REUTERS/Navesh Chitrakar 

A woman places flowers on a train wagon during a memorial marking the 74th anniversary of the first deportation of Jews from Thessaloniki to Auschwitz, in Thessaloniki, Greece, March 19, 2017 REUTERS/Alexandros Avramidis 

An employee looks out of a train carriage, owned by Russian Railways company, on the side tracks in Moscow, Russia, March 1, 2017. REUTERS/Maxim Shemetov 

A view shows train carriages, owned by Russian Railways company, on the side tracks in Moscow, Russia, March 1, 2017. REUTERS/Maxim Shemetov 

A view shows train carriages, owned by Russian Railways company, on the side tracks in Moscow, Russia, March 1, 2017. REUTERS/Maxim Shemetov 

An employee stands near train carriages, owned by Russian Railways company, on the side tracks in Moscow, Russia, March 1, 2017. REUTERS/Maxim Shemetov 

A view shows the dry lakebed near the city of Salgueiro, Pernambuco state, northeast of Brazil, October 26, 2016. Picture taken October 26, 2016. REUTERS/Ueslei Marcelino 

A rescue worker prepares to move the remains of a carriage at the site of Sunday's train derailment in Pukhrayan, south of Kanpur city, India November 21, 2016. REUTERS/Jitendra Prakash 

Rescue workers move a carriage at the site of Sunday's train derailment in Pukhrayan, south of Kanpur city, India November 21, 2016. REUTERS/Jitendra Prakash 

Rescue workers move a carriage at the site of Sunday's train derailment in Pukhrayan, south of Kanpur city, India November 21, 2016. REUTERS/Jitendra Prakash 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages (front) owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A man walks past a train carriage owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

A view shows train carriages owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

People walk past a train carriage owned by Russian Railways company on the side tracks in Moscow, Russia, July 8, 2016. REUTERS/Sergei Karpukhin 

Children carry a baby in a stroller at a railway station at a makeshift camp for refugees and migrants at the Greek-Macedonian border near the village of Idomeni, Greece, May 9, 2016. REUTERS/Marko Djurica 

A refugee carries a baby carriage as a young boy follows under heavy rainfall at a makeshift camp for migrants and refugees at the Greek-Macedonian border near the village of Idomeni, Greece, April 24, 2016. REUTERS/Alexandros Avramidis