UK plans for Heathrow airport expansion The UK government has begun a four-month public consultation on its decision to build a third runway at Heathrow, BritainÕs busiest airport ÑÑÑÑÑÑÑ Expanded airport boundary Colnbrook M25 tunnel M25 Proposed third runway Harmondsworth Heathrow Airport Sipson Longford M4 LONDON Existing runways 1km 0.6 miles Towns to be wholly or partly demolished ÑÑÑÑÑÑÑ Increased domestic flights Six regional airports could be added to Heathrow hub network by 2030 Ð Belfast International, Liverpool, Newquay, Prestwick, Humberside and Durham Tees Valley Noise: Ban of six and a half hours on scheduled night flights. Measures to include legally binding targets and provision of noise insulation for homes and schools Emissions: Adherence to existing limits on air quality. Pledge to ensure that there will be no increase in airport-related road traffic and more than half of passengers coming to Heathrow will use public transport Compensation: Homeowners to be paid 25 percent above market value plus costs for homes which are compulsory purchased to make way for new runway. About 900 homes are expected to be demolished Benefits: Department for Transport says expansion will lead to lower fares, fewer delays and more daily destinations for passengers, while creating thousands of local jobs Timescale: Parliament to vote on airport expansion in winter 2017-18. Third runway due to be operational in 2025. Cost, including construction of sixth terminal, expected to be around £17.6bn ($21.5bn) ÑÑÑÑÑÑÑ Sources: Department for Transport, The Guardian, ITV © GRAPHIC NEWS