By Tony Bizjak -- California traffic safety officials will pump $8 million this coming year into an aggressive anti-drunken driving program with a controversial focus: sobriety checkpoints.Armed with federal grants, police in 150 California cities are launching what the state’s Office of Traffic Safety chief says may be the most extensive checkpoint program in the country in 2010, increasing by nearly 50 percent the number of checkpoint operations statewide.In doing so, police will be ratcheting up efforts on one of the most oft-debated tactics in the anti-drunken driving arsenal.

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