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Trajectory Planning of Autonomous Vehicle in Freeway Driving Cover

Trajectory Planning of Autonomous Vehicle in Freeway Driving

Open Access
|Jun 2021

Abstract

This paper describes trajectory planning for an Autonomous Vehicle (AV) in the freeway path. Three types of driving modes are analyzed. First was free flow, this constitutes that moving at the desired speed is determined at the beginning of the movement. Second case was car following, when overtaking or lane-change was impossible, distance or speed adaptation is executed using the variable acceleration/deceleration strategy. Third case was lane change or overtaking. For lane change or overtaking paths, the 5th degree polynomial is used to create a curvilinear path to changes its path to the left lane and then returns to its default lane. The velocity and relative distances of cars are main factors for decision making. All proper driving decisions algorithm is introduced. According to autonomous car desired velocity, in the two driving cases (fast and slow desired velocity for AV) are studied by simulation and their results analyzed and compared with together.

DOI: https://doi.org/10.2478/ttj-2021-0021 | Journal eISSN: 1407-6179 | Journal ISSN: 1407-6160
Language: English
Page range: 278 - 286
Published on: Jun 22, 2021
Published by: Transport and Telecommunication Institute
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Hashem Ghariblu, Hossein B. Moghaddam, published by Transport and Telecommunication Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.