In an attempt to reduce the level of car use, park and ride schemes have been introduced which paradoxically are designed to increase traffic volumes, with sites at Odd Down, Lansdown and Newbridge. A very large increase in city centre parking was also provided under the new SouthGate shopping centre development, which necessarily introduces more car traffic. In addition, a bus gate scheme in Northgate aims to reduce private car use in the city centre. National Express operates coach services from Bath bus station to a number of cities. Bath also has a network of bus routes run by First West of England, with services to surrounding towns and cities, such as Bristol, Corsham, Chippenham, Devizes, Salisbury, Frome and Wells. Faresaver Bus company also operate numerous services to surrounding towns. The Bath Bus Company runs open top double-decker bus tours around the city, as well as frequent services to Bristol Airport. Stagecoach West also provides services to Tetbury and the South Cotswolds.