Police will be maintaining order on roads to make sure persons are not behind the wheel under the influence of drugs or alcohol.
Police will also be patrolling inside and around the festival territory, also maintaining order and inspecting whether people are not carrying or under the influence of drugs.
K-9 units will also be present.
Positivus is a long-standing festival that draws tens of thousands of people from Latvia and abroad.
As usual, Positivus will take place in balmy Salacgrīva by the Baltic coast on July 26 and 27. British alternative rock band The 1975 and Australia's Cut/Copy are also to perform this year alongside Underworld, the headliner.
A three-day event for the past few years, this year Positivus will last only two days.