Out of town shopping centres represent a sensible, efficient land use. Large-scale shopping does not sit well with residential behaviour. For example, early morning deliveries and late-night shopping can create a lot of noise. In a traditional environment where shops are immediately beside residential areas, this is a nuisance to local residents; this is not the case in out of town sites. Only out of town locations offer the retail industry the space it needs to function. To run an efficient modern shop, large amounts of space with particular planning needs often have to be used. This is often incompatible with densely populated, built-up areas where retail units are largely unable to be altered significantly to meet modern needs.