For a second time this month, the California Highway Patrol and other police agencies are cracking down on motorists who drive while talking on cell phones.

The CHP and other Bay Area law enforcement agencies Tuesday will be "aggressively seeking out and taking enforcement action against violators," said CHP spokesman Sgt. Trent Cross.

On Aug. 11, CHP officers and other police agencies issued more than 650 citations to motorists talking on mobile phones while driving. Fines for first-time offenders range from $120 to $150, police said.

One car stop in Solano County led to the arrest of a driver for drunken driving, Cross said.

Police are urging all drivers to use an earpiece or other hands-free device to talk on cell phones while driving. What's more, police are reminding drivers that anyone under 18 is banned from using cell phone at all while driving.