A driver pulled over for using his cellphone also turned out to be intoxicated and had a history of drunken driving convictions and a suspended license, reported the CHP.
The driver was one of 35 suspected drunken driving arrests CHP officers made throughout the weekend.
Officer Todd Heron made the cellphone traffic stop on River Road, near Barnes Road at about 8:15 p.m. Sunday.
Driver Martin Flores, 35, of Santa Rosa appeared to be drunk and was evaluated, reported CHP spokesman Officer Jon Sloat.
Flores failed the test and was arrested on suspicion of drunken driving. This will be his third DUI case within a decade, said Sloat.
On Sunday evening a Santa Cruz driver headed home from a weekend on the Mendocino Coast was stopped for speeding while on Highway 101 near Healdsburg.
Manuel Rivera, 42, had his three children in his car. The driver failed a sobriety test and was arrested on suspicion of drunken driving and child endangerment.
Rivera also has a prior DUI conviction, Sloat said.
A Santa Rosa woman driving her sister and four young children was stopped on Highway 101 near River Road Saturday night at about 8:40 p.m.
Officer Crandon Kopriva believed driver Phylicia Saunders, 22, had been speeding.
The officer smelled alcohol and was told it was from the adult passenger, Sloat said.
But Saunders failed a sobriety test and was arrested on suspicion of drunken driving and endangering the children in the car.