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Title:

Introducing Vehicle Dynamics in Car-Following Logic: The MFC Vehicle Acceleration Model

Accession Number:

01660291

Record Type:

Component

Abstract:

Most car-following models in microsimulation software use a set of equations, which are basically independent from the vehicle dynamics. The vehicle, the driver and the road conditions are modeled in such deterministic way that for a given pair of start-desired speed all vehicles/drivers demonstrate the same behavior, which is fundamentally different from what happens in reality. Since car-following models are used to simulate traffic evolution rather than vehicle motion, the low computational and implementation cost of the underlying models is more important than a reliable representation of the microscopic vehicle dynamics. However, in studies where energy consumption estimation is important and more in general when vehicle dynamics can play a role in the simulation study, current car-following logic can lead to significant error in the accuracy of the prediction and to misleading conclusions. In order to contribute to close this gap, the present paper proposes a novel vehicle acceleration model (MFC) composed by three interconnected layers: i) the driver style which is simulated via a proposed ‘willingness to accelerate curve’; the driver/vehicle gear shifting strategy; and the vehicle’s acceleration curve. The model input takes two offline-calibratable parameters, gear shifting style and driver style, it is not computationally expensive and provides very accurate predictions in terms of both acceleration profile and energy consumption. Comparative results along with well-known Gipps model and Rakha and Lucic Vehicle Dynamics Model acceleration model which is part of RPA model are presented and prove the robustness of the proposed MFC approach.

Supplemental Notes:

This paper was sponsored by TRB committee AHB45 Standing Committee on Traffic Flow Theory and Characteristics.

Report/Paper Numbers:

18-04642

Language:

English

Authors:

Makridis, Michail
Fontaras, Georgios
Ciuffo, Biagio
Mattas, Kostantinos
Thiel, Christian

Pagination:

20p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Highways; Operations and Traffic Management; Vehicles and Equipment

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-04642

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 11:08AM