RIVERSIDE, Calif -

Law enforcement agencies throughout Riverside County will be ramping up patrols today and through the weekend to nab drunken and drug-impaired drivers as part of a Fourth of July holiday crackdown.

The county's ``Avoid the 30'' anti-DUI campaign -- named for the number of police agencies involved -- will begin at 6 p.m. and conclude at 11:59 p.m. Sunday.

More than two-dozen saturation patrols and sobriety checkpoints are planned countywide, the first operation tonight in Hemet.

During its 2012 Fourth of July crackdown, the Avoid the 30 task force netted 60 DUI suspects. The campaign was only two days long because Independence Day fell in midweek.

The Avoid campaign will coincide with the California Highway Patrol's five-day ``maximum enforcement period,'' during which all available officers are deployed to catch intoxicated motorists, speeders and other scofflaws.