Eco-Driving Optimization with the Traffic Light Countdown Timer in Vehicle Navigation and Its Impact on Fuel Consumption

Zhen Di (), Shihui Zhang, Ayijiang Babayi, Yuhang Zhou and Shenghu Zhang
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Zhen Di: Jiangxi Provincial Key Laboratory of Comprehensive Stereoscopic Traffic Information Perception and Fusion, East China Jiaotong University, Nanchang 330013, China
Shihui Zhang: School of Transportation Engineering, East China Jiaotong University, Nanchang 330013, China
Ayijiang Babayi: School of Transportation Engineering, East China Jiaotong University, Nanchang 330013, China
Yuhang Zhou: School of Transportation Engineering, East China Jiaotong University, Nanchang 330013, China
Shenghu Zhang: School of Mathematics and Statistics, Jiangxi Normal University, Nanchang 330039, China

Sustainability, 2025, vol. 17, issue 8, 1-14

Abstract: For most drivers of fuel-powered vehicles who do not have specialized eco-driving knowledge, simple and practical strategies are the most effective way to encourage eco-driving habits. By incorporating traffic light countdown timers from vehicle navigation systems, this paper develops a 0–1 integer linear programming (ILP) model to determine the optimal speed curve and further provide actionable, easy-to-implement eco-driving recommendations. Specifically, time is discretized into one-second intervals, with speed and acceleration also discretized. Pre-calculating instantaneous fuel consumption under various speed and acceleration combinations ensures the linearity of the objective function. For a specified road and a given time duration, the optimal speed profile problem for approaching intersections is transformed into a series of speed and acceleration selections. Through the analysis of multiple application scenarios, this study proposes practical and easily adoptable eco-driving strategies, which can effectively reduce vehicle fuel consumption, thereby contributing to the sustainable development of urban traffic.

Keywords: eco-driving strategy; fuel consumption; speed profile; vehicle navigation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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