Sustrans is a UK charity enabling people to travel by foot, bike or public transport for more of the journeys they make every day. They work with families, communities, policy-makers and partner organisations so that people are able to choose healthier, cleaner and cheaper journeys, with better places and spaces to move through and live in. The charity is working on projects to encourage people to walk, cycle, and use public transport, to give people the choice of "travelling in ways that benefit their health and the environment". Sustrans' flagship project is the National Cycle Network, which has created over 14,000 miles of signed cycle routes throughout the UK, although about 70% of the network is on previously existing, mostly minor roads where motor traffic will be encountered.