Abstract
Accident statistics and studies of driving behaviour have shown repeatedly that curved roads are hazardous. It was hypothesized that the safety of curves could be improved by indicating in advance the course of the road in a more effective way than do traditional road signs. A code of sequences of stripes put on the right edge of the pavement was developed to indicate to the driver the radius of the curve ahead. The effect of these markings was investigated on a driving simulator and the results are discussed.