Drivers in Seattle can expect traffic to be disrupted Wednesday at least three times for May Day events. King County Metro Transit says its service may be affected, and riders should be prepared for delays and congestion. Metro will be tweeting updates at “kcmetrobus” and on its blog, Eye on Your Metro Commute.

The planned May Day events:

• 10 a.m. rally: Westlake Park 400 Pine St. Pacific Northwest Anarchists and Salish CIRCA. Some participants will be filming police; some may be dressed as clowns.

• 1 p.m. rally and Immigrants Rights March: Expected to draw some 3,000 people. Participants will gather at St. Mary’s Church, 611 20th Ave. S., and at Judkins Park, 2150 S. Norman St. After a rally at the park, the march begins around 3:30 p.m. heading north on 20th Street and wending its way to the Jackson Federal Building, 915 Second Ave.

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• 6 p.m., corner of Pike Street and Broadway on Capitol Hill: The nature of this unstructured event is unclear.