The busy streets of London have apparently emptied of traffic, with figures suggesting nearly one in five motorists has abandoned the roads.
The flow of vehicles has fallen by 17% since the Games began as people turn to rail services to move around the packed capital, said Olympic organiser Locog.
Record numbers of travellers are now using the Docklands Light Railway (DLR) which services Games sites including the Olympic Park in Stratford and Greenwich Park which is hosting the equestrian events.
Paul Deighton, Locog's chief executive officer, said: "Transport for London (TfL) have seen journeys up by about 7.5%; the national rail services have seen about a 5% uptake; DLR have seen record numbers, about 65% up, so they have been managing big, big numbers.
"Road traffic in and around central London has been down around about 17%, which means we have been able to be more flexible about opening Games lanes up to regular traffic, and our objective is to get the Games traffic to its venues on time. We have been able to do that."
The transport system will come under increased pressure this weekend, with vast crowds expected to turn out as athletes compete for 21 gold medals on "Super Saturday".
"That is really going to test our capacity," Mr Deighton said.
"We are going to get big crowds again lining the route of the marathon and the triathlon, of course, so streets will be very busy.
"Our usual message: Plan ahead if you want to attend and our website has all the information people need."