The transport network was said to be running extremely well on Friday evening as thousands of people travelled to the opening ceremony of the Olympic Games.
Transport for London (TfL) said that while services were very busy, there were no major delays on the main line and Tube.
Westfield Stratford City closed to the public from 3pm, with people without tickets to the ceremony at the Olympic Park asked to avoid travelling to the Stratford area. Late-night Tube services were scheduled to run after the event until 2.30am, while train services out of London will also be extended until the early hours.
TfL said it anticipated an average daily increase in capacity of three million journeys during the Olympics, with travel expected to peak at the weekends.
Huge crowds are set to line the streets of London and Surrey on Saturday to support Tour de France winner Bradley Wiggins and his team mates Chris Froome and Mark Cavendish in the men's cycling road race. This is the first of the Games' road events, all of which will see temporary road closures and parking restrictions. Viewing capacity in central London will be very limited.
Events will also be taking place across the capital at the Olympic Park and other venues including the ExCel exhibition centre in Docklands, Greenwich Park and Wimbledon.
Network Rail (NR) and the Association of Train Operating Companies (Atoc) said a total of nearly 444,000 extra main line train seats were being provided on Friday. In all, four million seats were on offer, thanks to the running of extra services and longer trains.
Earlier on Friday, passengers had suffered hold-ups at North Greenwich where the Games' gymnastics and basketball is being held, due to signal failures on the Jubilee line.
There were also delays for Greater Anglia train company services into London's Liverpool Street and for trains into Euston. Meanwhile, a train designated by Southeastern to mark the start of the official high-speed London to Stratford Javelin services left St Pancras station five minutes late.
On the roads, there was congestion around the Thames bridges in London as the Olympic Torch Relay travelled down the river. There were also jams along some of the Olympic traffic-only Games Lanes, including the A40 in Ealing, west London. Roads were also congested around St Pancras station and around St John's Wood in north-west London where the Olympic archery competition began at Lord's cricket ground.