Driver electronic device use in 2007.

drivers, drivers of other races than black or white, drivers in the West, drivers on expressway exit ramps, drivers traveling through clear weather conditions, drivers of passenger cars, drivers on weekdays (especially during weekday rush hours), and drivers driving alone. Table 1 shows the percentages of drivers holding phones to their ears in 2008 and 2009 by major characteristics of drivers. The significant decrease of hand-held cell phone use in the West in 2009 as compared to 2008 is shown in Figure 2.