The case study area encompasses the section of the Old Kent Road stretching from Bricklayers Arms to the road’s junction with the A202, and includes all trips made within a one-mile radius of the Old Kent Road. The analysis of vehicle trips was conducted by Environmental Defense Fund Europe using data procured from INRIX; this data is a sample of all heavy-duty vehicles that travelled on this section of the road during the week of September 9 to 15 2019.