Lambrigg ground frame,  south-west of the accident site, controlled two crossovers, each one comprising two sets of points allowing trains to cross from one running line to the other in emergencies or during track maintenance work.
The Lambrigg ground frame, located south-west of the incident area, handled two crossings. Each crossing included two sets of points that allowed trains to change from one running line to another for emergency purposes or when conducting track maintenance work.