Will RER and metro lines be affected by strike action on thursday 23 June? By | June 20, 2016 | in Vote Up 0 Vote Down Answered Public Public Private Anonymous asked June 20, 2016 Will RER and metro lines be affected by strike action on thursday 23 June? 1 answer Vote Up 0 Vote Down Public Ben ⋅ Staff ⋅ June 21, 2016 There's no announcements of train delays or service reduction due to strikes at this moment. This may change over the next 12-18 hours. #1 Please login or Register to Submit Answer Username or Email Address Password Remember Me