Given the size of the sample and the large number of variables which differentiate the sites, it was necessary to choose the sample based on a small number of key characteristics. The sample sites were chosen, as far as possible, to replicate the distribution of these characteristics across all of the trial sites. In addition, care was taken to ensure that the sample was representative in terms of the stated scheme objectives. Carriageway generally 6-7m wide, and of good condition. Mixture of bungalows, semi-detached and detached properties, with three blocks of six flats.
All properties have off-street parking provision, many with space to accommodate several vehicles.
Small formal play area alongside Broomfield Road. Mixture of Local Authority tenants and owner occupied terraced houses in this small section of a large housing estate. Carriageway approximately 5m width, further reduced by parked cars at many locations. Large recreational, grassed area at the heart of the site, with small retail area adjacent. All carriageways are 30mph.