... the crossing than a normal check rail- is this the objection to having such a formation? Hi Jim, If the crossings are exactly opposite each other, the short section of wing rail between the knuckle and nose will act as a check rail for the opposite crossing, for slow-moving vehicles. So this formation is acceptable in yards and sidings, but not on a running line (not long enough and no proper check flare). The bigger problem arises where the crossings are not quite opposite, like this: 2_310829_130000000.png Then wheels on the centre road cannot be prevented from hitting the nose at A because it is impossible to fit a check rail at B. regards, Martin. posted: 31 Mar 2012 17:01 from: Jim Guthrie Martin Wynne wrote: The bigger problem arises where the crossings are not quite opposite, like this: 2_310829_130000000.png Then wheels on the centre road cannot be prevented from hitting the nose at A because it is impossible to fit a check rail at B. Martin, If a check rail is fitted on ...