Key Performance Indicators on the TFL Road Network

<p> <strong>This dataset will no longer be updated.</strong> </p> <p>Selected key performance indicators on the TFL Road Network.</p> <p>Number of hours of Serious and Severe Disruption on the road network by planned and unplanned status, journey time reliability, and total number of works undertaken on the road network.</p> <p>TLRN = TFL Road Network</p> <p>The maximum permissibile total number of road works allowed on the TLRN was capped at 3,250 for any one period, in Period 1 of 2013/14 until the end of the financial year 2014/15. This is a reduction of 13.4 per cent from the cap of 3,753 that applied from Period 7 2011/12 to the end of financial year 2012/13.</p> <p>The key measure for monitoring smoothing traffic flow is journey time reliability. It is defined as the percentage of journeys completed within an allowable excess of 5 minutes for a standard 30 minute journey during the AM peak.</p> <ul> <li>Serious congestion. There is traffic congestion that is unusual for the time of day at the location or in an area and traffic has been stopped for less than 5 minutes - but in excess of the red signal time displayed on the traffic signals operating on the road.</li> <li>Severe congestion. There is traffic congestion that is unusual for the time of day at the location or in an area and traffic has been stopped for more than 5 minutes; and traffic queuing is longer than normal for the time of day, more than for ‘serious’ congestion.</li> </ul> <p>TFL also publish annual reports on road safety <a href="https://tfl.gov.uk/corporate/publications-and-reports/road-safety" target="_blank">here</a>.</p>