The Falls Festival starts on Sunday and ends on Wednesday, New Year's Day, at Marion Bay.

Inspector Peter Powell said there would be officers on-site, including plain clothes and uniform officers and a sniffer dog.

He also advised that there would be a significant increase in traffic in the area, particularly around Sorell, Copping and Marion Bay.

Extra officers will be on duty to assist with traffic flow on roads around the site.

``However, travellers should expect delays and allow extra time to reach their destination, and if possible, avoid travelling during the peak times for Falls Festival traffic,'' Inspector Powell said.

``We will again be conducting a major random breath testing operation on January 1, at the conclusion of the festival, testing drivers leaving the site.

``Have a plan to get home safely, don't drive if you have been drinking or you're affected by drugs.

``Think about sharing a lift to Falls with a friend or catching a bus.''

The bus timetable is available at www.fallsfestival.com.

The expected peak traffic times are:

*Sunday (incoming to Marion Bay): Medium traffic volumes are expected all day, but may increase early in the afternoon and early evening with patrons heading to the festival.

*Monday (incoming to Marion Bay): Peak times are expected from 7am to 4pm.

*Tuesday: Traffic is expected to be light with relatively fewer arrivals and departures from the site.

*Wednesday, New Year's Day (outgoing traffic from Marion Bay): This will be the busiest day, with all festival traffic leaving the site. Festival patrons are expected to start leaving from about 6am, with most leaving the festival site by 5pm.