This document supports the latest statistics in the Road freight series. It is based on data derived from three continuous surveys run by the Department of Transport: the Continuing Survey of Road Goods Transport Great Britain (CSRGT GB), the Continuing Survey of Road Goods Transport Northern Ireland (CSRGT NI) and the International Road Haulage Survey (IRHS).

The Continuing Survey of Road Goods Transport Great Britain (CSRGT GB)
This survey measures the UK activity of GB-registered heavy goods vehicles.

The Continuing Survey of Road Goods Transport Northern Ireland (CSRGT NI)
This survey measures the UK and international activity of NI-registered heavy goods vehicles.

The International Road Haulage Survey (IRHS)
This survey measures the international activity of GB-registered heavy goods vehicles.