Abstract: In order to research drivers' driving safety features in the process of curving driving, driving simulation experiments were carried out with 30 testees. During the experiments, the testees' operation data and the eye movement data were collected using DLab and the faceLAB 5 non-contact eye tracker respectively. Influences of curve radius on their visual search and operational mode were studied. Results show that the horizontal visual line concentrated in [-10 ° to 10 °], the mean of the horizontal fixation angle is a quadratic function relation of the curve radius, that as the curve radius increases, their horizontal fixation angle shifts to the right, that in terms of operation mode, there is a negative correlation between the steering wheel angle and the curve radius, that the relationship between vehicle lateral position and the curve radius is not obvious, and that drivers should pay attention to the traffic information on the curve side and control the vehicle driving along the curve.

Key words: traffic engineering, curve driving, visual search, eye movement behavior, operating mode, lateral position