Rail passengers walk on a platform to take their train at the Saint-Lazare railway station during the ninth day of national strike and protests in France against the government's pension reform, with heavy disruption on French SNCF railway and the Paris transport RATP networks, in Paris, France, March 23, 2023. REUTERS/Lucien Libert 

Rail passengers wait for their train at the Saint-Lazare railway station during the ninth day of national strike and protests in France against the government's pension reform, with heavy disruption on French SNCF railway and the Paris transport RATP networks, in Paris, France, March 23, 2023. REUTERS/Lucien Libert 

Rail passengers walk on a platform past a train at the Saint-Lazare railway station during the ninth day of national strike and protests in France against the government's pension reform, with heavy disruption on French SNCF railway and the Paris transport RATP networks, in Paris, France, March 23, 2023. REUTERS/Lucien Libert 

A Swiss rail (SBB CFF FFS) train leaves the Hauptbahnhof station in Zurich, Switzerland, March 21, 2023. REUTERS/Denis Balibouse 

A Swiss rail (SBB CFF FFS) train leaves the Hauptbahnhof station in Zurich, Switzerland, March 21, 2023. REUTERS/Denis Balibouse 

A Swiss rail (SBB CFF FFS) train leaves the Hauptbahnhof station in Zurich, Switzerland, March 21, 2023. REUTERS/Denis Balibouse 

The New Mexico Rail Runner Express, a commuter rail train running between Albuquerque and Santa Fe is pictured, near Santa Fe, New Mexico, U.S., March 14, 2023. REUTERS/Bing Guan 

A motorcyclist rides past a section of the Colne Valley Viaduct as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A section of the Colne Valley Viaduct is seen as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A section of the Colne Valley Viaduct is seen as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

Construction of the Colne Valley Viaduct continues as the HS2 high-speed rail line is built in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A section of the Colne Valley Viaduct is seen as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A vehicle drives past a section of the Colne Valley Viaduct as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A car drives past a section of the Colne Valley Viaduct as construction continues of the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A section of the Colne Valley Viaduct is seen as construction continues at the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

A vehicle drives past a section of the Colne Valley Viaduct as construction continues at the HS2 high-speed rail line in Denham, near London, Britain, February 3, 2023. REUTERS/Toby Melville 

Labourers work at a construction site of a metro rail project, in New Delhi, India, February 1, 2023. REUTERS/Anushree Fadnavis 

Labourers work at a construction site of a metro rail project in New Delhi, India, February 1, 2023. REUTERS/Anushree Fadnavis 

Labourers work at a construction site of a metro rail project in New Delhi, India, February 1, 2023. REUTERS/Anushree Fadnavis 

Construction work continues at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

Workers walk beside an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker walks beside an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A viewing porthole offers views of construction work continuing at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker walks near to an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A viewing porthole offers views of construction work continuing at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A viewing porthole offers views of construction work continuing at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker walks beside an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker walks beside an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker walks beside an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker looks through a viewing porthole at the HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A worker stands at the entrance to an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A viewing porthole offers views of construction work continuing at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A worker stands at the entrance to an HS2 high-speed rail construction site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

A viewing porthole offers views of construction work continuing at the HS2 high-speed rail site at Euston in London, Britain, January 27, 2023. REUTERS/Toby Melville 

The construction site of a railway line and infrastructure work being built by Rail Vikas Nigam Limited (RVNL) is seen from the village Maroda, in the northern state of Uttarakhand, India, January 17, 2023. REUTERS/Anushree Fadnavis 

A signboard is seen near the construction site of railway station Dungripanth Dhari Devi, being built by Rail Vikas Nigam Limited (RVNL), in Dungripanth village, in the northern state of Uttarakhand, India, January 17, 2023. REUTERS/Anushree Fadnavis 

The construction site of a railway line and a tunnel being built by Rail Vikas Nigam Limited (RVNL) is seen near Shivpuri in the northern state of Uttarakhand, India, January 12, 2023. REUTERS/Anushree Fadnavis 

People walk along a quieter than normal street in the City of London financial district, as rail workers continue a strike over pay and terms, in London, Britain, January 4, 2023. REUTERS/Peter Nicholls 

A woman walks down a quieter than normal street in the City of London financial district, as rail workers continue a strike over pay and terms, in London, Britain, January 4, 2023. REUTERS/Peter Nicholls 

A man walks down a quieter than normal street in the City of London financial district, as rail workers continue a strike over pay and terms, in London, Britain, January 4, 2023. REUTERS/Peter Nicholls 

A man cycles down a quieter than normal street in the City of London financial district, as rail workers continue a strike over pay and terms, in London, Britain, January 4, 2023. REUTERS/Peter Nicholls 

A woman walks through a quieter than normal Leadenhall Market in the City of London financial district, as rail workers continue a strike over pay and terms, in London, Britain, January 4, 2023. REUTERS/Peter Nicholls 

Workers stand at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers walk at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers walk at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers walk past closed off entrance to Waterloo East Station at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

A passenger looks at an informational board at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers walk at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

A passenger walks at Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

A train approaches Clapham Junction station along snow covered tracks as rail employees strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Toby Melville 

Snow covered tracks are seen from Clapham Junction station as rail employees strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Toby Melville 

A train approaches Clapham Junction station along snow covered tracks as rail employees strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Toby Melville 

Trains are parked at Clapham Junction station as rail employees strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Toby Melville 

A passenger checks the train schedule display in Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers check the train schedule display in Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers check the train schedule display in Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

A passenger checks the train schedule display in Waterloo Station as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers walk on the only open platform at London Bridge station where a limited number of trains still operate, as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Staff work at London Bridge station where a limited number of trains still operate, as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska 

Passengers stand on the only open platform at London Bridge station where a limited number of trains still operate, as rail workers strike over pay and terms, in London, Britain December 13, 2022. REUTERS/Maja Smiejkowska