asked Her Majesty's Government:

What is the average time between the delivery of a planning inspector's report and a decision by the Secretary of State for Transport, excluding all reports of inquiries that exceed 14 days.[HL7330]

The information required to make this calculation can be found on DfT’s website at http://www.dft.gov.uk/stellent/groups/dft_roads/documents/divisionhomepage/030417.hcsp. This lists all schemes on which decisions have been issued over the past two years, together with the inspector’s reports on each scheme. The date of the inspector’s report can be taken as the date of delivery to the department.