The Cambridgeshire Guided Busway, known locally as The Busway, connects Cambridge, Huntingdon and St Ives in the English county of Cambridgeshire. It is the longest guided busway in the world, overtaking the O-Bahn Busway in Adelaide, South Australia. Proposed initially in the 2001 Cambridge-Huntingdon Multi-Modal Study, which recommended widening of the A14 road and construction of a guided busway along the old railway lines, construction began in March 2007 and it was opened on 7 August 2011 after a succession of delays and cost overruns.