Dynamic Eco-Driving Speed Guidance at Signalized Intersections: Multivehicle Driving Simulator Based Experimental Study

Peng Chen,Jian Sun,Shenyang Chen,Yunpeng Wang,Keping Li,Cong Yan

doi:10.1155/2018/6031764

Abstract

Variations in vehicle fuel consumption and gas emissions are usually associated with changes in cruise speed and the aggressiveness of drivers’ acceleration/deceleration, especially at traffic signals. In an attempt to enhance vehicle fuel efficiency on arterials, this study developed a dynamic eco-driving speed guidance strategy (DESGS) using real-time signal timing and vehicle positioning information in a connected vehicle (CV) environment. DESGS mainly aims to optimize the fuel/emission speed profiles for vehicles approaching signalized intersections. An optimization-based rolling horizon and a dynamic programming approach were proposed to track the optimal guided velocity for individual vehicles along the travel segment. In addition, a vehicle specific power (VSP) based approach was integrated into DESGS to estimate the fuel consumption and CO2 emissions. To evaluate the effectiveness of the overall strategy, 15 experienced drivers were recruited to participate in interactive speed guidance experiments using multivehicle driving simulators. It was found that compared to vehicles without speed guidance, those with DESGS had a significantly reduced number of stops and approximately 25% less fuel consumption and CO2 emissions.

Highlights

The transportation sector accounts for a vast quantity of fuel consumption and serves as the largest atmospheric carbon emitter in the world
Even though the primary objective of an Intelligent Speed Adaptation (ISA) device is safer driving, its users benefitted from reduced fuel consumption and emissions due to smoother speed variations [6]
A vehicle specific power (VSP) based approach was integrated into DESGS to estimate the fuel consumption and CO2 emissions

Summary

Introduction

The transportation sector accounts for a vast quantity of fuel consumption and serves as the largest atmospheric carbon emitter in the world. Environmental protection, and economic benefits have prompted renewed public and private interest in an ecological energy-efficient driving style that can reduce fuel consumption and greenhouse gas emissions. Eco-driving serves as one effective and cost-effective strategy to enhance the fuel efficiency of the transportation section [1,2,3]. The essential idea of eco-driving is to provide real-time driving advice to individual vehicles so that the drivers can adjust their driving behavior or take driving actions to reduce fuel consumption and emission levels [4]. Even though the primary objective of an ISA device is safer driving, its users benefitted from reduced fuel consumption and emissions due to smoother speed variations [6]. From an energy and emissions standpoint, this initiative laid the foundation for eco-driving, which refers to driving in an ecological and economical way

Methods

Results

Conclusion