READING - Evaluation of Retroreflective Material on Stop Sign Posts
The Virginia Transportation Research Council looked at the addition of reflective stripes to the posts holding up stops signs and then studied driver behaviour. They found that the signs were easier to see in the daylight if the post did not have the stripe installed. The opposite was true at night. However, the conclusion of whether the treatment was useful or not did not surprise me. Adding the stripe did not change the number of drivers who chose to ignore the signs.