of drivers of the famous London black cabs loudly hooted their horns as they jammed Parliament Square in London today.
The problem is that the cab drivers are not allowed into the special "Games lanes" which have been reserved for Olympic athletes and officials, which then makes their work that much harder.
, representing the United Cabbies union says it's "unacceptable" that cabs were not allowed, adding that "this is a working city and we need to get around and do our job."
The first lane has opened near Heathrow Airport and others will be in use for two days before the games actually start.
Two more protests are planned, including one on the opening day of the Olympics.