The performance of an adaptive frontlighting system (AFS) was investigated by studying driver's eye movements during nighttime driving. Cornering and bending headlamps were included in the study which was carried out on a winding road in a highland area of Japan. The test road was 2.7 km long and driven in both directions. It proved impossible to determine where the driver looks when driving round a curve because of considerable variation in the drivers. When AFS was switched on there were distinctive differences in the drivers' eye mark position compared with when AFS was switched off. For the covering abstract see ITRD E123380.