A tougher standard for punctuality will be introduced on Britain's railways next month in an attempt to improve performance.
Under the new measures, train times will be recorded to the minute at every stop, whereas current measures mean a train is still "on time" if it reaches its final destination within five or 10 minutes of the timetable.
Train firms will also be asked to publish information about their services, including how many trains were early, within a minute of the timetable or within three, five, 10 or 15 minutes.
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The proportion of trains cancelled will also be shown.
The existing five or 10-minute standard will continue to be published.
The measures have been introduced after punctuality on Britain's railways sank to a 13-year low in 2018.
Rail Delivery Group chief executive Paul Plummer said: "Every second matters to us and our customers which is why rail companies have together developed and are now using these to-the-minute measures for train punctuality at every station as part of our plan to improve the railway today."