SNCF controllers are called to strike starting this Thursday evening, at the call of the CGT and Sud Rail. The SNCF plans one TGV in two, with priority given to Alpine destinations, due to February holidays.

Free exchanges and 100% refunds of the price are possible. Victor Tassel, reporter in the Economy department, will answer your questions about the movement this Thursday, from 2 p.m. to 8 a.m., live on CNN.com and Facebook.