Caroline went on the new high speed train from St Pancras to Stratford International Station to see how the transport infrastructure has been completed ahead of time for the 2012 Games.
Caroline joined other Assembly members, the mayor and other officials to experience the fast train journey which will shuttle thousands of spectators when the games come to London next year.
The trip then went on the new DLR extension from Stratford International to the main Stratford station. This is due to open in July according to TfL after further test.
The visit then concluded with the new ticket hall which has been completed at Stratford.
"It is great to see such infrastructure being completed for the Games. My main concern though is that there will be a cut in train services for Southeastern passengers whilst the Games are on, which just makes no sense when every other train company is putting on more trains, longer trains and later trains" commented Caroline.