Can i use the navigo subsription for 1 week to use RER B train also? By | January 22, 2017 | in Vote Up 0 Vote Down Answered Public Public Private Questions Anonymous asked January 22, 2017 Can i use the navigo subsription for 1 week to use RER B train also? 1 answer Vote Up 0 Vote Down Public Ben ⋅ Staff ⋅ January 22, 2017 Yes Navigo includes RER in zones 1 - 5 by default, which includes all of RER B. #1 Please login or Register to Submit Answer Username or Email Address Password Remember Me