Risk Analysis, Social and Decision Research Unit, Department of Psychology, Stockholm University, S 106 91 Stockholm, Sweden.
Accid Anal Prev. 2010 Mar;42(2):704-8. doi: 10.1016/j.aap.2009.10.019. Epub 2009 Nov 28.
Three experiments were set up to study how drivers estimate mean travel speeds on trips with different speed limits. To specify, participants judged mean speeds of trips with speed limits on different distances of the trip. Study 1 showed that the mean speed on a road with a temporary 30 km/h speed limit was overestimated if the speeds were greater than 80 km/h on the rest of the trip. Study 2 replicated and extended the results to problems with more speed combinations. In Study 3 the distances of the speed limits were varied and the results showed that a temporary 30 km/h speed restriction gave overestimations of the mean speeds of a trip for all combinations of original and temporary speed limits over all distances. Finally, some psychological issues and applied implications for speed regulation policies were discussed.
三项实验旨在研究驾驶员如何估计不同限速条件下行程的平均行驶速度。具体来说，参与者根据行程中不同距离的限速来判断行程的平均速度。研究 1 表明，如果行程中其余部分的速度大于 80 公里/小时，则临时限速 30 公里/小时的道路上的平均速度会被高估。研究 2 复制并扩展了更多速度组合的结果。在研究 3 中，改变了限速的距离，结果表明，临时限速 30 公里/小时的限制会导致所有原始和临时速度限制组合的行程平均速度被高估，无论距离如何。最后，讨论了一些与速度调节政策相关的心理学问题和应用影响。
