Oracle's Open World conference starts October 1-5, 2017. Howard Street is closed between 3rd and 4th streets for the event.
That's causing more traffic headaches around downtown with detours in place.
"If you have to take your car be aware there will be increased traffic, officers will be directing traffic," said SFPD Officer Giselle Linnane.
SFPD plans an increased security presence around the events. Police Marine units will be on the Bay, keeping boaters safe.