Sustrans, which stands for SUStainable TRANSport, is a charity whose aim is to encourage people to walk, cycle & use public transport to help reduce motor traffic & its adverse effects. With roots in Civil Engineering, they undertake practical projects such as cycleways & footpaths. Their flagship project, the National Cycle Network, reached the grand total of 10, 000 miles open as at summer 2005 consisting of traffic free paths & minor roads linking most main towns & cities in the UK.