Vehicle Deceleration and Acceleration Distance Impacts to Emission Encountering Stop Sign

Graduate #139
Discipline: Technology and Engineering
Subcategory: Pollution/Toxic Substances/Waste

Shaojie Liu - Texas Southern University
Co-Author(s): Lei Yu and Fengxiang Qiao, Texas Southern University

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Stop sign is one of traffic signs to notify drivers that they must stop before proceeding. Generally, stop signs are placed to prevent crashes where there might be a question about who should have the right of way or where drivers might not be able to see oncoming vehicles. Stop sign has been an effective countermeasure to prevent car crash. However, vehicle deceleration before the stop sign and acceleration after the stop sign generates a new issue for emission as the change of speed can cause emission volume variation. This study investigates the impacts of vehicle acceleration and deceleration before the stop sign to emission. Three scenarios are selected in this research. Distances from the stop signs before deceleration and after acceleration are recorded to find out how they influence the emission of vehicle. Different vehicle turning directions after moving through stop signs will also be recorded as an important factor. This study will help people have a better understanding on vehicle emission variation pattern when vehicles are countering the stop sign. Furthermore, the finding from this study might also help the stop sign placement optimization.

Funder Acknowledgement(s): CREST

Faculty Advisor: Fengxiang Qiao, liushaojie03051994@gmail.com

Role: Conducting the research and writing the paper.