Day-to-Day Track Maintenance Part II: Switches & Crossings

Continuing the study of the normal tasks performed by a permanent-way gang, this film deals with the maintenance of switches, common crossings and obtuse crossings. These are the fundamental units from which all track layouts, however complicated are built up.

تُعرض النبذة بالإنجليزية لعدم توفر ترجمة بعد.