Currently, being distracted by an "outside person, object, event" (commonly known as "rubbernecking") is the most reported cause of distraction-related crashes, followed by "adjusting radio/cassette/CD". "Using/dialing cell phone" is eighth. A 2003 study by the University of Utah psychology department measured response time, following distance, and driving speed of a control group, subjects at the legal blood alcohol content (BAC) limit of 0.08%, and subjects involved in cell phone conversations. As the study notes; "... this is the third in a series of studies that we have conducted evaluating the effects of cell phone use on driving using the car following procedure (see also Strayer & Drews, 2004; and Strayer et al., 2003). Across these three studies, 120 participants performed in both baseline and cell phone conditions. Two of the participants in our studies were involved in a crash in baseline conditions, whereas 10 participants were involved in a crash when they were conversing on a cell phone." However, no drunk driver had a crash in any test. After controlling for driving difficulty and time on task, the study concluded that cell phone drivers exhibited greater impairment than drunk drivers.