A bar chart has a vertical axis labelled as ``number of collisions per merge'' and is marked from 0 point 00 to 0 point one zero. The horizontal axis is labeled as ``Driving condition.'' A bar on the horizontal axis is labeled as Driving alone is less than 0 point 02, a bar labeled as ``Driving with passenger'' is up to 0 point 03, and the bar labeled as Talking on a cell phone reaches up to 0 point 07.