Environmental Impact of Freight Signal Priority with Connected Trucks (original) (raw)
Related papers
2014
Abstract: The transport sector is one of the main energy consumer sectors and responsible for pollutant emissions in the European Union. An analysis and quantification of the impacts of using information technologies in the traffic management, such as vehicle-infrastructure-vehicle (VIV) and infrastructure-vehicle (IV), on traffic congestion, energy and pollutant emissions will be performed. A case study in the city of Lisbon was developed, analyzing 55 real-world driving profiles at the A5 highway. An algorithm identifying and predicting potential traffic congestion events was created. Similarly, driving profiles from a traffic micro-simulation model (AIMSUN) were studied considering a period between 08:00h and 09:00h, estimating the impacts associated to traffic congestion prediction and comparing them with a baseline scenario. Results revealed that traffic management based on VIV allowed to obtain average reductions between 7% and 23% in fuel usage and CO2 emissions, between 10% ...
Journal of the Air & Waste Management Association (1995), 2018
Signalized intersections have been identified as vehicle emission hotspots, where drivers decelerate, idle, and accelerate their vehicles in response to signal changes. Advanced traffic signal status warning systems (ATSSWSs) can be applied to reduce traffic emissions at intersections by mitigating unnecessary braking and acceleration. In this study, two types of ATSSWSs - variable message sign (VMS)-based and vehicle-to-infrastructure (V2I)-based were designed, and their environmental effectiveness was evaluated through driving simulator-based experiments. Three scenarios were designed and tested: 1) baseline without an ATSSWS, 2) with the VMS-based ATSSWS, and 3) with the V2I-based ATSSWS. The Motor Vehicle Emission Simulator model was used to evaluate and compare the environmental effectiveness of these two types of ATSSWSs. The results indicate that the proposed ATSSWSs can reduce traffic emissions at signalized intersections. In particular, the V2I-based ATSSWS can substantiall...
Sustainability
Sustainable urban mobility planning is a strategic and integrated approach that aims to effectively address the complexities of urban transportation. Additionally, vehicle emissions are still a significant problem found in cities. Its greatest concentration involves intersections, as they have the highest number of stop-and-go operations, resulting in the highest engine load. Although electrification of vehicles is underway, the coming years and the energy crisis may cause the full transformation and fulfillment of the European Green Deal to be postponed. This state of affairs means that much effort should still go into possibly modifying the current infrastructure to make it more environmentally friendly. The article addresses the use of vertical road markings such as “stop”, “give way”, and also signal controllers signs, at four-arm X intersections. The modeling of intersection variants was carried out in the traffic microsimulation software VISSIM. The created model was calibrate...