TORONTO - Workers are putting the finishing touches on a fence surrounding Toronto's G20 security zone.

Police are advising people to avoid the fenced-off area, and officers will ask those trying to get inside for identification and their reason for entering.

Motorists can expect slowdowns in the downtown core, and police suggest commuters use public transit.

There are ads in local newspapers today explaining the security zone and advising people how to deal with it.

There was a visible increase in the number of uniformed police officers on downtown streets over the weekend.

Activists have promised to be out in force to protest the summit of world leaders that starts this week.

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