Fewer traffic jams, cutting costs

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Research by the Transportation Research Group (TRG) at the University of Southampton has contributed to the development of sustainable road transport networks both in the UK and other leading cities worldwide.

  • Economic benefits valued by Transport for London at over £29 million per year
  • Research has informed new software design, now in place in 200 cities across the world
  • The new algorithms were first implemented in 2009 across London’s bus network
  • The system is now operational in over 200 cities worldwide

Supported by funding from EPSRC and other contributors, TRG has been able to test and develop novel traffic management solutions to help combat traffic jams on UK roads, cutting costs and benefitting society as a whole.

Further studies by TRG led to the design of new bus priority systems at traffic signals in London. These were implemented first in 2009 through London’s iBus system – a satellite-based Automatic Vehicle Location system installed on all buses across the network. TRG’s research has enabled priority to be given to 8,000 buses at 2,000 traffic signals controlled by the world-leading SCOOT Urban Traffic Control system in London.

Economic benefits from these new algorithms have been valued by Transport for London at £29 million per year from bus passenger delay savings alone. Other positive impacts include a reduction in fuel consumption and carbon emissions from buses, as well as ways to encourage people to change from private low-occupancy vehicles to more efficient high-occupancy public transport.