Release Calendar

Summary: Public performance measure (PPM) measures the number of trains reaching their final destination 'on time'. On time is defined as within five minutes for regional and London and South East trains, and within ten minutes for long distance trains.

Summary: This is the average age of rolling stock. Data is available by sector and train company. All rail vehicles leased from rolling stock leasing companies (ROSCOs) by train operators that have a franchise agreement with the Department for Transport are included in the calculations of average age.

Summary: A signal passed at danger (SPAD) occurs when a train passes a stop signal without authority to do so. SPADs are assigned a numerical ranking between 0 and 28 based on the severity of the incident. Those SPADs ranked at over 20 are those with the highest potential for serious consequences, while those between 16 and 19 are considered to have less serious potential. Those ranked from 1 to 15 carry little or no risk.

Summary: Timetabled train kilometres (TTKM) show the number of kilometres each train operating company will achieve according to the winter and summer train timetable if they are operating at full capacity.

Summary: This is the average age of rolling stock. Data is available by sector and train company. All rail vehicles leased from rolling stock leasing companies (ROSCOs) by train operators that have a franchise agreement with the Department for Transport are included in the calculations of average age.