Highway Engineering I (Geometric Design of Roads)

The course aims to provide theoretical and practical knowledge regarding fundamental principles, methods, and stages of designing new roads or improving existing ones. In addition, the principles of propulsion are described and the limit values for design elements are identified. The emphasis is placed on safety criteria for the geometric design of roads.

Objectives

The course will help users to be familiar with the design and stage design of a road project process, to apply basic principles related to the safe and functional design of a road project, to check the limit values of study data in accordance with applicable instructions and finally to solve common problems that occur in geometric road design process.

Prerequisites

There are no prerequisites for this course.

Syllabus

Introduction. Determination and description of road geometry. Promotional forces and braking forces of vehicles. Movement of vehicles in curves. Road surface adhesion. Study details of horizontal alignment. Corner chart. Limit values of horizontal alignment elements. Design speed. Operating speed. Speed Limits. Calculation of possible speed of heavy vehicles, fuel consumption and journey time. Safety criteria. Study details of longitudinal profile and limit values. Cant road and joint inclinations. Visibility for stopping and overtaking. Administrative and functional categorization of roads. Section parts. Study details of sections. Typical cross sections. Calculation of earthwork with approximate and exact methods. Matching sections. Calculation accuracy of earthwork. Calculation of earth movement graphically and by applying linear optimization theory. Expropriations. Budget Project.