Where can I find road traffic statistics?

The Department for Transport publishes road traffic estimates for Great Britain each year and quarterly, by vehicle type and road type. Its road traffic statistics website shows counts at individual count points and has a free API.

Reported road casualties, including deaths, are published separately each year from police reports.

Official sources: Road traffic statistics · DfT road traffic counts

The latest figure

The newest value is at Department for Energy Security and Net Zero (DESNZ). More on it: Average UK petrol and diesel price.

When is the next figure out?

Weekly on Tuesdays at 9:30am for Monday's prices. The GOV.UK Content API JSON lists the current CSV, Excel and XML attachments; the CSV attachment URL changes each week (the 2018 onwards CSV has columns for petrol and diesel prices, duty and VAT)

Every official release due in the next two weeks is on the release calendar.

Terms used in this answer

• Cash terms
  A money figure stated at the prices of the time it refers to, with no adjustment for inflation. Also called nominal terms.
• Real terms
  A figure adjusted to remove the effect of inflation, so amounts from different years can be compared by what they would buy rather than their face value.
• Mean
  The total of all values divided by how many there are. Often what people mean by 'average', it can be pulled up or down by a few extreme values.
• Year-on-year change
  The change between a figure for one period and the same period twelve months earlier, such as March this year compared with March last year.

Where the figures come from

• Department for Energy Security and Net Zero (DESNZ) energy and emissions statistics, and Ofgem energy price cap data
  Where to find official UK energy prices, fuel prices, electricity generation, greenhouse gas emissions and the Ofgem price cap, and how to check claims.
• Department for Transport statistics and Office of Rail and Road official rail statistics
  How to find and use official DfT data on road traffic, casualties, vehicles and buses, and ORR rail data on journeys, punctuality and stations.

Related questions

• How many people die on UK roads each year?
• How many people use the railways?
• What is the energy price cap?

This answer says where the official figures are published and how they are defined. It gives no verdict on any claim. To report an error, send a correction request. More questions about energy, transport and emissions: all Energy, transport and emissions questions.