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Driver Responses To Graphic-Aided Portable Changeable Message Signs In Highway Work Zones, Yilei Huang, Yong Bai
Driver Responses To Graphic-Aided Portable Changeable Message Signs In Highway Work Zones, Yilei Huang, Yong Bai
Civil and Environmental Engineering Faculty Research and Publications
Portable changeable message signs (PCMSs) have been employed in highway work zones as temporary traffic control devices. Various studies showed that adding graphics to PCMS messages can provide advantages to traditional text messages, such as increasing legibility and improving the understanding of elderly drivers. This article synthesizes the findings of a two-phase research project aimed to investigate driver responses to graphic-aided PCMSs. Different text and graphic-aided PCMSs representing roadwork and flagger were set up in the upstream of highway work zones, and speed data of more than 2,700 vehicles were collected with a series of five speed sensors to determine …