Q火车

有英国运输警察的火车木板打击侵犯和破坏。也适用于一个A slot of time allocated for a train to travel along the railway

" class="glossaryLink ">途径

并不总是使用（例如，需要运行，aA mixture of sand and antifreeze, used for assisting traction adhesion during extreme weather. Sandite S4 also contains steel shot to assist track circuit operation

" class="glossaryLink ">桑特火车）。