Rail travel disruptions

A man pulls his luggage at the Gare de l'Est train station Tuesday, Dec. 10, 2019 in Paris. Only about a fifth of French trains ran normally Tuesday, frustrating tourists finding empty train stations, and most Paris subways were at a halt. French airport workers, teachers and others joined nationwide strikes Tuesday as unions cranked up pressure on the government to scrap changes to the national retirement system. (AP Photo/Francois Mori)

An empty platform is pictured during a railway strike at the Saint Germain au Mont d'Or train station, around Lyon, central France, Monday, Dec. 9, 2019. French commuters inched to work Monday through exceptional traffic jams, as strikes to preserve retirement rights halted trains and subways for a fifth straight day. Citing safety risks, the SNCF national rail network issued warned travelers to stay home or use "alternate means of locomotion" to get to work Monday instead of thronging platforms in hopes of getting the few available trains. (AP Photo/Laurent Cipriani)

An empty platform is pictured during a railway strike at the Saint Germain au Mont d'Or train station, around Lyon, central France, Monday, Dec. 9, 2019. French commuters inched to work Monday through exceptional traffic jams, as strikes to preserve retirement rights halted trains and subways for a fifth straight day. Citing safety risks, the SNCF national rail network issued warned travelers to stay home or use "alternate means of locomotion" to get to work Monday instead of thronging platforms in hopes of getting the few available trains. (AP Photo/Laurent Cipriani)

Railway employees, with red jackets, give informations to travellers at the Gare de Lyon train station, Friday, Dec. 6, 2019 in Paris. Frustrated travelers are meeting transportation chaos around France for a second day, as unions dig in for what they hope is a protracted strike against government plans to redesign the national retirement system. (AP Photo/Rafael Yaghobzadeh)

Riot police officers secure an area during a demonstration in Paris, Thursday, Dec. 5, 2019. Small groups of protesters are smashing store windows, setting fires and hurling flares in eastern Paris amid mass strikes over the government's retirement reform. (AP Photo/Thibault Camus)

A youth runs during a demonstration in Paris, Thursday, Dec. 5, 2019. Small groups of protesters are smashing store windows, setting fires and hurling flares in eastern Paris amid mass strikes over the government's retirement reform. (AP Photo/Thibault Camus)

A youth runs during a demonstration in Paris, Thursday, Dec. 5, 2019. Small groups of protesters are smashing store windows, setting fires and hurling flares in eastern Paris amid mass strikes over the government's retirement reform. (AP Photo/Thibault Camus)

A truck is set ablaze during a demonstration in Paris, Thursday, Dec. 5, 2019. The Eiffel Tower shut down Thursday, France's vaunted high-speed trains stood still and teachers walked off the job as unions launched nationwide strikes and protests over the government's plan to overhaul the retirement system. (AP Photo/Alexander Turnbull)

A man rides his bicycle in front of the closed Eiffel Tower in Paris, Thursday, Dec. 5, 2019. The Eiffel Tower shut down Thursday, France's vaunted high-speed trains stood still and teachers walked off the job as unions launched nationwide strikes and protests over the government's plan to overhaul the retirement system. (AP Photo/Francois Mori)

A man walks in a commuter train at the Saint-Lazare train station in Paris, Thursday, Dec. 5, 2019. Tourists are canceling travel plans and Paris is deploying thousands of police as France girds for massive, nationwide strikes and protests against President Emmanuel Macron's plans to overhaul the retirement system. Transport will be hardest hit by the walkout, with flights, trains and buses canceled and most of the Paris subway system coming to a halt. (AP Photo/Michel Euler)