The government said the largest drill to date was successfully held at Kai Tak Sports Park on Friday evening, involving some 63,000 people.

Most of the participants were government workers or people from community groups.

The two-hour drills were held at three venues -- the main stadium, the Kai Tak Arena and the youth sports ground, as officials tested out arrangements with the first two having capacity crowds.

At the 50,000-seater main stadium, bands from the disciplined forces put on a concert, as different scenarios, including simulated security issues, were tested.

Officials carried out evacuation drills as well as having spectators leave in a regular manner at the other two venues.

A number of senior officials, including Chief Secretary for Administration Eric Chan, culture, sports and tourism minister Rosanna Law and civil service chief Ingrid Yeung were on hand to observe the proceedings.

Chan said the park is scheduled to open sometime in March, but added reports saying that March 1 is the official opening day might be premature.

"Because we have many stress tests in the future - we have two large-scale stress tests [next month], so up to now, depending on the results of the tests, I think we cannot confirm the opening date," he told reporters.

As part of the tests, all participants left the venues at around the same time as they picked their own mode of transport.

Authorities recorded crowd control and transport data for analysis.

Chan added the scheduling of events in future should ensure that a capacity crowd at the three venues would not leave the park at the same time.

But he said authorities mapped out worst-case scenarios to train up the ability of different parties to react to emergencies.

Several participants told RTHK they were happy with the experience, saying signs giving directions were good and the sound system was solid.