Highway geometric design using Bézier curve approximation

Abstract

Traditional highway design procedure is a trial and error process where the system manager spends a lot of time. To improve this manual process, a new method to design highways is investigated. A mathematical function called Bézier Curve is used. Highway designs have been made with both traditional and Bézier Curve methods on a level type terrain. According to results, Bézier Curve gives a shorter highway than traditional method. And, the curve radius is also larger than traditional method which help improve highway safety and drivers' comfort. So, the highway designed with Bézier Curve reduces overall roadway length and larger curve radius than traditional designed highway.

Keywords

• Bézier curve
• highway design
• control points
• safety
• drivers’ comfort

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