National Highway Traffic Safety Administration, U.S. Department of Transportation (http://www.itsa.org/itsa/files/pdf/IVBSS2008HFDVI.pdf

Representative (COTR) was Nazemeh Sobhi (HSR-30). In this experiment 8 drivers (4 younger, 4 older) drove a 19 turn, 35-minute route. The route included sections through residential neighborhoods, on city streets, and on expressways. They were guided by an experimental navigation system that provided turn-by-turn instructions via a display mounted on the instrument panel. During the trip each driver was asked to dial six phone numbers and participate in simulated phone conversations. At the end of the trip drivers were asked to rate the difficulty of a variety of driver-information-system-related tasks. The instrumented car recorded lateral position in the lane, speed, throttle position, steering wheel angle, eye fixation location, and other measures. Typical lateral standard deviations were 0.5 feet and decreased with speed. Speed standard deviations were slightly in excess of 1 mile per hour. Using the phone and navigation systems resulted in slight increases in the standard deviation of throttle position and the standard deviation of steering wheel angle