A New Zealand firm's work should help fans get smoothly in and out of Olympic venues in London.
Consultancy Beca won the contract to provide crowd modelling which will be used to smooth the way for those who have bought nearly nine million tickets to the Olympics, which open on July 27.
Computer modelling developed three years ago can show where crowds will form and how big they will become under different scenarios.
Beca's information has helped engineers to design venues and event planners to reconfigure access so bottlenecks happen at the right places, or they can change schedules to spread the arrival and departure times of crowds.
Project leader for Beca, Alan Kerr, said his firm was selected ahead of other, British, companies.