This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Estimation of CO 2 Reduction Potential in Japan by Traffic-Flow Smoothing and Eco-Driving Promotion
Technical Paper
2013-01-0621
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper clarifies influence rate of traffic-flow and eco-driving factors that have effect on on-road fuel economy and a case study was conducted to estimate the CO₂ reduction potential due to traffic-flow smoothing and eco-driving promotion by analyzing floating car data from throughout Japan. The data employed in the study was obtained from hybrid vehicles equipped with an Eco Assist system. Previous research has reported that repeated use of these vehicles enhances fuel economy by approximately 10%. First, multiple regression analysis was performed on the subject floating car data to obtain a polynomial with fuel economy as the explained variable and items related to traffic flow and eco-driving as the explanatory variables. Average travel speed was found to have the greatest effect on fuel economy. In order to calculate the potential reduction in CO₂ emissions, the distributions of the explanatory variables were set for present conditions and assumed conditions of smoother traffic flow and more eco-driving promotion. These assumed conditions were applied to the polynomial and the CO₂ reduction potential was calculated. The assumed conditions were calculated to have a fuel economy enhancement potential of 18%, mainly due to traffic-flow smoothing. On the other hand, eco-driving was calculated to have fuel economy enhancement potential of 1% over and above the approximately 10% enhancement of Eco Assist. In addition, it was shown that two-thirds of the potential reduction in CO₂ emissions was contributed by improvements at travel speeds of 30 km/h and below.
Citation
Imaizumi, H. and Sengoku, K., "Estimation of CO2 Reduction Potential in Japan by Traffic-Flow Smoothing and Eco-Driving Promotion," SAE Technical Paper 2013-01-0621, 2013, https://doi.org/10.4271/2013-01-0621.Also In
References
- Imai , T. , Masuda , T. , Ishido , Y. , and Sengoku , K. Teitansoshakai jitsugennimukete, telematics ga dekirukoto -senshinno telematics service niyoru kankyouheno torikumi JSAE Convention Proceedings 48-10 11 14 2009
- Foundation for Promoting Personal Mobility and Ecological Transportation Eco-drive no fukyuhokokusho 46 2007
- Miyagi , H. The Experiment on Intelligent Signal Control by Profile Signal Control ITS World Congress 2009
- Road Bureau, Ministry of Land, Infrastructure and Transport Chikyuondankaboshinotameno doroseisakukaigi Chikyuondankaboshinotameno doroseisakukaigihokoku 22 2005
- Energy ITS kenkyukai Energy ITS no fukyunimukete 24 2008
- Barth Matthew , Boriboonsomsin Kanok Real-World CO 2 Impacts of Traffic Congestion Transportation Research Board 2008
- Gonder , J. , Earleywine , M. , and Sparks , W. Analyzing Vehicle Fuel Saving Opportunities through Intelligent Driver Feedback SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 5 2 450 461 2012 10.4271/2012-01-0494
- Imaizumi , H. , and Sengoku , K. Estimation of CO 2 Reduction Potential by Traffic-flow Smoothing and Eco-driving Promotion Honda R&D Technical Review 24 2 2012
- Oguchi , T. , Katakura , M. , Taniguchi , M. Carbondioxide Emission Model in Actual Urban Road Vehicular Traffic Conditions Proceedings of JSCE 695 125 136 2002