"2020-08-24"^^ . "true"^^ . _:vb10233 . "Maximum unguided length of fixed obtuse crossings is based on a minimum wheel diameter in service expressed in millimetres."@en . . . _:vb10557 . _:vb10037 . _:vb10557 _:vb10037 . _:vb10511 . "2021-09-10"^^ . _:vb10233 _:vb10511 . . _:vb10037 . "stable" . . _:vb10511 _:vb10557 . "ISC_MinWheelDiaFixObtuseCrossings" . _:vb10233 . . "1.1.1.1.5.2" . "4.8.2" . "Minimum wheel diameter for fixed obtuse crossings"@en .