A Study on Variable Message Signs Graphical Comparation

AbstractVariable message signs can display not only text information, but also graphic information. Graphic information can be identified further in the distance than text information. Besides, the graphical information is not limited by language, as different countries can use the same graphical signs. The paper studies driver's comprehension of various graphic of five signs via questionnaires. The results showed that driver's selection of graphical signs had significant differences; only graphic A and graphic B, and graphic B and graphic C of fog sign did not have significant differences. Based on hypothesis testing and multiple comparisons analyzed to obtain the graphics of the five signs, the conclusions provide a base reference for graphic design of highway variable message signs