Learning Outcomes
Successful completion of the course will assist students to:
• perceive the basic design principles as well as the design process of a road project
• understand the constraints and commitments under which critical limit values are derived
• apply basic principles and methods related to safe and operational road design
• assess combinations of critical design parameters regarding quality of the design
• tackle common problems during road geometric design process
Course Content (Syllabus)
Basic elements of geometric design, horizontal alignment, vertical alignment, cross sections. Road functional classification. Forces applied on the vehicle, tractive-braking forces, critical speed values, longitudinal and lateral friction. Design speed, operating speed V85, speed limits. Horizontal alignment: tangents, circular arcs, clothoid. Vertical alignment, profile diagram: longitudinal grades, sag and crest vertical curves. Cross sectional elements and cross slope. Superelevation run-off lengths. Role of sight distances in planning and design of highways. Fitting alignment to topography. Road design in 3D. Road Design Guidelines – Alignments and Cross-Sections.