The UCI also ordered an independent outside investigation to examine allegations about the UCI's own conduct and relations with Armstrong raised by the US Anti-Doping Agency report that detailed systematic cheating by the Texan and his team-mates.
The UCI has been accused of accepting $125,000 from Armstrong to cover up suspicious doping tests. Riders and officials will also be targeted.
"Part of the independent commission's remit would be to find ways to ensure that persons caught for doping were no longer able to take part in the sport, including as part of an entourage," the UCI said. That move prompted a statement from John Fahey, president of the World Anti-Doping Agency.
"As an independent body itself, WADA supports the decision to set up an independent external commission to examine the problem of doping in cycling," Fahey said. "The most important thing is for this issue to be dealt with once and for all and WADA looks forward to the release of further details on the commission's make-up and terms of reference."
A potentially explosive defamation suit filed by the UCI, its president Pat McQuaid and predecessor Hein Verbruggen against Irish journalist and former Tour rider Paul Kimmage is on hold. Kimmage was scheduled to defend his claims at a December hearing that cycling's leaders protected Armstrong. Kimmage has received more than US$70,000 in donations from cycling fans to fight his case.
Armstrong's expulsion was confirmed this week when the UCI acknowledged the USADA findings that his teams ran "the most sophisticated, professionalised and successful doping program that sport has ever seen."
An "independent sports body" will be chosen by UCI within two weeks to nominate members of the advisory panel, which is scheduled to report back by June 2013.As well as leaving the Tour winner's list blank from 1999-2005, the UCI agreed "not to award victories to any other rider or upgrade other placings in any of the affected events." Other stage-race titles lost by Armstrong include the 2001 Tour of Switzerland and Dauphine Libere in 2002 and 2003.
The UCI did not directly address the status of Armstrong's Olympic time trial bronze medal from the 2000 Sydney Games, which could be stripped by the International Olympic Committee.
Further revelations of doping are expected in an Italian prosecutor's probe into sports doctor Michele Ferrari, who was identified by USADA as a central figure in the doping programmes for Armstrong and the US Postal Service team. Ferrari was banned from sport for life by USADA after he chose not to contest its findings.
USADA chief executive Travis Tygart has urged the UCI to pursue more doping investigations.
- AP