Abstract
The results of the study show that road- side posts provide better information if they are presented on the outside rather than the inside of the curve. Posts on both sides of the road did not result in faster judgments than posts only on the outside of the curve. Subjects performed better in the higher- frequency post condition than in the lower frequency condition, but there was no marked interaction between the post frequency and post location variables. The findings have implications for the cost- benefits of rural road delineation schemes.