The California Highway Patrol has arrested 53 impaired drivers in the Bay Area since Thursday evening. The number is up from the 2008 total of 48 during the same reporting period, which started Thursday at 6 p.m. and ended at 6 a.m. today. The CHP has not reported any fatalities in the Bay Area during their Maximum Enforcement Period. The holiday enforcement period ends at midnight Sunday. DUI arrests also have increased across California compared to last year. CHP officers have arrested 549 drunken drivers, up from 409 at this time in 2008.