Boris Johnson has faced strong criticism over his transport policy at People's Question Time in Catford. He was forced to defend his £60m cable car project, and faced demands for a better transport network for south London.
Passenger numbers on the Thames cable car have fallen from 180,000 a week during the Olympics to as few as 300 a day.
The service has surpassed is first year target of 1.3 million trips, with more than 1.7 million journeys being made, but the number of daily uses has fallen dramatically.
Transport for London charges £4.30 for an adult to cross the Thames by cable car, reduced to £3.20 for pay-as-you-go Oyster cards. Oyster travelcards are not accepted.
Lib Dem London Assembly member Caroline Pidgeon is calling for that to change, with cable car trips being included in the price of an Oyster travelcard.
TFL paid more than £15 million towards the construction of the east London Thames crossing and spent more than two million pounds on the service in its first 20 weeks of operation.
No service on Thames Cable Car due to large vessel passing.
Boris arrives on first cable car at the Greenwich Peninsula. He says it will be a "great addition to London's transport network"
The UK's first urban cable car is due to open in east London at midday.
The line crosses over the Thames, creating a direct link between the 02 Arena in Greenwich and the ExCel exhibition centre.
It can carry 2,500 people an hour.
Boris Johnson confirmed today that the Olympic cable car project may not be finished in time for the Games.
Transport for London has never formally announced an Olympic link to the project which will see a cable car between the Greenwich Peninsula and the Royal Docks.**
But it has long been seen as providing a key alternative transport link to help keep London moving during the huge influx of Olympics visitors. Original projections for the £45 million cable car system, where construction began in August 2011, aimed for an official opening in late Spring.
And Boris Johnson confirmed to our Political Correspondent Simon Harris today that the project is making good progress. But he was not prepared to commit to it actually being ready in time for the Games.
London''s £60 million cable car across the Thames reaches a crucial milestone this weekend.
Less than a year after work started, the cables are being hung from the new towers between Greenwich and Silvertown.36 Gondolas have arrived from Switzerland and Transport for London is promising a launch sometime this summer.