A method performed by an information sharing system for sharing of information pertinent a railway crossing of a road and a railway, said information sharing system being associated with a roadway vehicles management system holding vehicle status data of one or more roadway vehicles, said method comprising: deriving from said roadway vehicles management system, position-related data of a roadway vehicle along said road; determining, based on said roadway vehicle position-related data, a roadway vehicle timing at which said roadway vehicle is estimated to arrive at said railway crossing; deriving from a railway vehicles management system holding vehicle status data of one or more railway vehicles, position-related data of a railway vehicle along said railway; determining, based on said railway vehicle position-related data, a railway vehicle timing at and/or during which said railway vehicle is estimated to arrive at and/or have passed said railway crossing; determining, based on comparing a roadway vehicle time window comprising said roadway vehicle timing, to a railway vehicle time window comprising said railway vehicle timing, that said roadway vehicle time window at least partly overlaps said railway vehicle time window; wherein said railway crossing at least partly comprises an active protection system with one or more level crossing barriers and/or gates adapted to be lowered, and/or one or more level crossing signs adapted to provide a warning, during a no-passage time window associated with said railway vehicle timing, said method then further comprising: deriving time information of said no-passage time window from said railway vehicles management system; and providing information (7, 8) associated with the expected overlap, to said roadway vehicle and/or to said railway vehicle, wherein said information (7"') then comprises data based on said time information, said data initiating said roadway vehicle to take into account, and/or present visually and/or audibly, time to expiry of said no-passage time window. deriving from said roadway vehicles management system, position-related data of a roadway vehicle along said road; determining, based on said roadway vehicle position-related data, a roadway vehicle timing at which said roadway vehicle is estimated to arrive at said railway crossing; deriving from a railway vehicles management system holding vehicle status data of one or more railway vehicles, position-related data of a railway vehicle along said railway; determining, based on said railway vehicle position-related data, a railway vehicle timing at and/or during which said railway vehicle is estimated to arrive at and/or have passed said railway crossing; determining, based on comparing a roadway vehicle time window comprising said roadway vehicle timing, to a railway vehicle time window comprising said railway vehicle timing, that said roadway vehicle time window at least partly overlaps said railway vehicle time window; deriving time information of said no-passage time window from said railway vehicles management system; and providing information (7, 8) associated with the expected overlap, to said roadway vehicle and/or to said railway vehicle, wherein said information (7"') then comprises data based on said time information, said data initiating said roadway vehicle to take into account, and/or present visually and/or audibly, time to expiry of said no-passage time window.