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Title:

Investigating Potential Impacts of an Optimization-Based Eco-ACC System on Traffic and Environment

Accession Number:

01368126

Record Type:

Component

Abstract:

Recent developments in Advanced Driver Assistance Systems (ADAS) lead to the concept of Eco-driving support systems, which assist drivers in controlling vehicles in a sustainable way to reduce fuel consumption and carbon dioxide emissions. In this contribution, the authors first put forward a modeling framework for generic ADAS, and then design an algorithm for an Ecological Adaptive Cruise Control (EcoACC) system under this framework. This system automatically regulates the longitudinal behavior of equipped vehicles to minimize CO2 emissions and to maximize travel efficiency and driving comfort. To this end, the algorithm is recast into an optimization based control problem, where the controlled vehicle tries to minimize its cost by predicting the behavior of other vehicles. The optimal control problem is solved with a so-called dynamic programming approach. The proposed algorithm is applied in a single lane ring road to examine the impacts of the EcoACC systems employing the Eco-driving strategy. Simulation results show that the Eco-driving strategy results in a smooth vehicle behavior compared to driving strategies that only consider the travel efficiency (Efficient-driving strategy). At the macroscopic level, applying Eco-driving strategy leads to lower speed and lower flow at free traffic conditions and higher speed and higher flow at congested conditions compared to Efficient-driving strategy. From an environmental perspective, the Eco-driving strategy results in a lower spatial CO2 emission rate. However, the impacts of the EcoACC system on total CO2 emissions is negative at congested conditions, due to the higher flow it produces.

Supplemental Notes:

This paper was sponsored by TRB committee ADC20 Transportation and Air Quality

Monograph Accession #:

01362476

Report/Paper Numbers:

12-2685

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Wang, Meng
Daamen, Winnie
Hoogendoorn, Serge
van Arem, Bart

Pagination:

21p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Energy; Environment; Highways; Operations and Traffic Management; Vehicles and Equipment; I15: Environment; I72: Traffic and Transport Planning; I91: Vehicle Design and Safety

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-2685

Files:

TRIS, TRB

Created Date:

Feb 8 2012 5:11PM