California Highway Patrol officers in San Diego County arrested 83 people on suspicion of drunken or drugged driving over Memorial Day weekend this year. As we near the July 4 holiday we'll hear about the results of a new study from UCSD analyzing the relationship between blood alcohol content (BAC) and automotive accidents. Researchers found that in collisions involving alcohol, as little as 0.01 BAC increased the likelihood of death or serious injury by 36 percent.