London Olympic transport runs smoothly
London's transport system has run smoothly on the first full working day of the 2012 Olympic Games.
Transport for London said it had "gone pretty well" despite fears that an extra three million journeys a day would bring gridlock.
More Olympic tickets will go on sale after the row over empty seats, organisers Locog have said.
And in an historic success, Team GB's men's gymnasts won bronze - the first medal in 100 years.
They had initially won silver, but were demoted after fourth-place Japan successfully challenged the result, moving up to silver.
Some 12 million journeys take place daily in the capital and commuters had been urged to plan ahead to avoid congestion.
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Six platforms at London Bridge were made exit-only between 18:00 BST and 22:00 BST to handle an expected 50,000 spectators from equestrian events at Greenwich travelling through it.
There was evidence of unusually quiet Tube platforms in the early evening at some stations, while at others there was the usual level of passengers for a Monday, BBC reporters said.
"It seems Londoners have listened to the message and been more flexible with their journeys," a spokeswoman for Transport for London said.
Prime Minister David Cameron said he had used the Tube while the head of the International Olympic Committee, Jacques Rogge, used the Docklands Light Railway.
On Tuesday, routes to Wembley Stadium are expected to be busy during the evening rush hour.
Transport for London's Games Transport Director, Mark Evers, said there were lots of challenges ahead, including Friday when 80,000 people would be attending sessions at the Olympic Park for the first time.
"We've had a good start from a transport perspective but we're certainly not complacent and we'll work hard to make sure that we keep services running," he said.
In other Olympic developments:
- Team GB divers Tom Daley and Pete Waterfield came fourth in the men's synchronised 10m platform final
- Britain's Liam Tancock missed out on a medal in the the men's 100m backstroke final
- Lithuanian 15-year-old Ruta Meilutyte - who goes to school in Plymouth - won her country's first ever Olympic gold in the swimming pool in the women's 100m breaststroke
- Organisers say food and water supplies are being increased at venues after long queues and supply shortages during the opening days
- Team GB's Katherine Grainger and Anna Watkins clocked an Olympic record time of 6mins 44.33secs in the women's double sculls rowing as they powered into the final
- Ten people have been charged with ticket touting offences since the start of the Games, and a further 19 have been arrested, Scotland Yard said
Locog said an initial 3,000 tickets - including 600 gymnastics tickets - were "put back into the pot" and sold on the London 2012 website on Sunday night.
During the men's team gymnastic final, BBC reporter Ollie Williams reported that dozens of army personnel were filling seats in the North Greenwich Arena, but empty seats remained.
At some venues, seats in the accredited "Olympic family" areas - reserved for groups including officials, sports federations, athletes, journalists and sponsors - have remained empty.
Locog communications director Jackie Brock-Doyle said organisers were doing everything they could to fix the problem.
"We're doing this session by session, talking to the accredited groups - including obviously broadcast media and everybody else - and asking whether we can release, for the different sessions, tickets back into the public pot," she said.
However, the ticket releases were causing some confusion at the Olympic Park as members of the public were arriving and expecting to be able to buy them, security staff told the BBC.
The latest release of tickets can be bought only online, before they are picked up at collection points in venues for pre-purchased tickets.