Petaluma police tonight plan two DUI/license checkpoints.

As usual, police declined to say where the checkpoints will be. Sgt. Ken Savano said the first checkpoint will start at 6 p.m. and at some point in the evening it will be moved to the second location, ending at about 2 a.m. About a dozen officers will be involved, he said.

Funding for the checkpoint, including what is overtime for officers participating, is from a grant provided by the state Office of Traffic Safety through the National Highway Traffic Safety Administration.