An Extensive Investigation of an Eco-Approach Controller under a Partially Connected and Automated Vehicle Environment

Huifu Jiang, Jia Hu, Byungkyu Brian Park, Meng Wang and Wei Zhou
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Huifu Jiang: Research Institute of Highway, Ministry of Transport, Beijing 100088, China
Jia Hu: The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China
Byungkyu Brian Park: Link Lab & Department of Engineering Systems and Environment, University of Virginia, Charlottesville, VA 22904, USA
Meng Wang: Department of Transport & Planning, Delft University of Technology, Delft 2628 CN, The Netherlands
Wei Zhou: Research Institute of Highway, Ministry of Transport, Beijing 100088, China

Sustainability, 2019, vol. 11, issue 22, 1-24

Abstract: This study evaluated the performance of an eco-approach control system at signalized intersections under a partially connected and automated vehicle (CAV) environment. This system has the first eco-approach controller able to function with the existence of surrounding human-driven traffic. A previous evaluation only confirmed its benefits. The purpose of this study was to conduct a further extensive test on the controller to identify room for improvement. Two different networks were tested, including an isolated signalized intersection and a corridor with two signalized intersections. The measures of effectiveness (MOEs) adopted were throughput and fuel consumption. All the before-and-after MOEs were compared using t -tests. The results indicate that the controller generally improved the fuel efficiency without harm to the mobility, and its environmental performance was affected by the minimum CAV speed, green ratio, congestion level, and marker penetration rate of CAVs. A detailed investigation revealed that no significant environmental benefit was generated under high congestion levels when the minimum speed of CAVs was more than 20 mph, and the shockwaves caused by the eco-approach control may result in a gating effect that reduces the throughput at the upstream intersection of the corridor under high congestion levels.

Keywords: eco-approach; signalized intersections; partially connected and automated vehicles environment; throughput; fuel consumption (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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