Average delay, average speed and reliability of travel times on the Strategic Road Network (motorways and ‘A’ road network managed by Highways England), for the year ending June 2016.
The average delay on the Strategic Road Network (SRN) is estimated to be 9.0 seconds per vehicle per mile compared to free flow. This represents an increase of 1.3% on the previous quarter (the year ending March 2016).
The average speed was 59.2mph. This is a 0.2% decrease on the year ending March 2016.
The reliability of travel times is measured using the Planning Time Index. This presents 68% of additional time needed compared to free flow, on average, on individual road sections to ensure on time arrival. This is a 2 percentage points increase on the previous quarter.
The year ending March 2016 was the first set of annual figures available for this release series.