Abstract
This paper describes a real-time data acquisition system and instrumentation installed in a full-size north american automobile for the purposes of research studies of driver performance in real traffic situations and under various conditions of driver stress. The basic parameters recorded are distance travelled and three primary control movements- steering wheel, accelerator and brake. Provision is also made for vehicle yaw measurement, driver's pulse rate and perceived illumination level in night-driving tasks. Other parameters may be recorded as dictated by project requirements.