The Impact of Electronic Coupled Heavy Trucks on Traffic Flow
S Mueller, German Aerospace Center (DLR), DE
With CACC-equipped, trucks can drive fully automated in a platoon. An overview of the findings on the impact on safety, fuel consumption and traffic flow of the CACC equipped trucks is presented.
It is to be expected that goods transportation on the road will increase over the next decades. As infrastructure has reached its limits in many parts already, new solutions towards solving the issues related to freight transportation on the road need to be found, a simple reconstruction or upgrading of the infrastructure won?t be enough. The intelligent transport system seems to be such an innovative approach. The spectrum of its applicability and impact is still researched by the scientificic community as well as by the industry. Despite the related uncertainties, politicians from local levels up to the European Commission are already supporting the use of these intelligent transport systems.
This Paper aims to give a review on the existing investigations into the ITS-system Cooperative Adaptive Cruise Control (CACC,) deployed in heavy trucks operations. With CACC-equipped trucks can drive fully automated in a platoon, of up to seven coupled trucks. The system allows a reduction of the minimum distance between two entitities of such a platoon to up to ten metres. An overview of the findings on the impact on safety, fuel consumption and traffic flow of the CACC equipment, which can be found in research literature already, will build the first step of this research. In a second step, an in-depth analysis of the impact on traffic flow is presented. This in-depth analysis is based on a traffic flow model, developed for the example of German motorways, within the research of a PhD-thesis.
The modeling approach also reveals insights on how CACC systems can impact road capacities and average speed on motorways.
Association for European Transport