Abstract
Several research studies are being actively conducted on truck platooning, in which several trucks are organized in one fleet. The main advantages of truck platooning are increased traffic efficiency, improved fuel consumption and driver performance, and enhanced safety. However, these effects may depend on the actual conditions of road geometry and traffic situation. Therefore, this study analyzed the sustainability of truck platooning on an expressway network in terms of road geometry and traffic situation. To select elements affecting truck platooning on an expressway network, an expert survey was conducted. In addition, the weight of each element selected in the survey was determined through an analytic hierarchy process. In this study, the geometric conformity and traffic environment indices for truck platooning were calculated based on the data collected by the congestion zone (Conzone) and the weights. Moreover, the calculated indices were clustered into three different categories through cluster analysis. Based on the cluster analysis result, each Conzone was classified into three types: Type 1, which is suitable for both traffic environment and geometric conformity to operate platooning; Type 2, which has geometrical conditions but requires improvement of traffic environment; and Type 3, which requires geometrical improvement. Finally, the Type 1 Conzones were expanded to expressway sections to consider the network connectivity and truck platoon operability. The obtained results revealed that 14 sections of 9 expressway lines are most applicable for truck platooning.
Highlights
The LV is manually controlled by the onboard driver, while the FV tracks and moves along its driving path [8]
Appropriate sections for truck platooning operations were investigated for the expressway network in Korea
Through an expert survey, elements that can impact truck platooning on expressways were determined
Summary
Advances in technology development have led to increased research attention on autonomous vehicles. The EU intends to reduce traffic accidents, fuel consumption, emissions, and CO2 through truck platooning To this end, auto manufacturers, parts producers, intelligent transportation systems (ITS) and cooperative-ITS (C-ITS) companies, road management agencies, service providers, as well as information and communication technology (ICT) companies, are participating in various truck platooning projects. Agriesti et al [6] insisted that it is difficult to define a single value that allows the assessment of reductions in fuel economy This is because that the amount of fuel consumption does not depend just on the features of truck platoon, including headway, speed, and number of trucks, and on the environmental features (i.e., temperature, wind speed), driving behavior, surrounding traffic and geometric environment, and so on. The application of truck platooning does not lead to positive effects as expected, such as above-mentioned improvement in congestion and fuel savings, in all road geometric conditions and traffic situations. The analysis results in the Conzone unit were expanded to expressway sections to evaluate the network connectivity and truck platoon operability
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