Principles of Highway Geometric Design

Designing safe and efficient roadways is at the heart of civil and transportation engineering. Understanding how physical highway features interact with vehicles and drivers is essential for any aspiring infrastructure designer. This text-based course guides you through the core principles of highway geometric design, taking you from basic terminology to practical design calculations. You will learn how to plan alignments, determine sight distances, and apply modern safety standards to road layouts. What you'll learn: 1. Understand the core components of highway cross-sections, including lanes, shoulders, and drainage. 2. Calculate critical sight distances, including stopping, overtaking, and intersection sight distances. 3. Design horizontal alignments using transition curves, super-elevation, and extra widening. 4. Formulate vertical alignments by balancing gradients and designing safe summit and valley curves. 5. Integrate modern safety design principles, such as the Safe System Approach, into your layouts. 6. Explore how digital design workflows and modern modeling tools are used to map roadway geography. The course begins with fundamental definitions and design controls, such as design speed and traffic volume, before advancing to step-by-step horizontal and vertical design procedures. This course is designed for beginner civil engineering students, transport planners, and drafting technicians who want to build a solid foundation in roadway design. No prior highway design experience is required. Start reading today to build the foundational skills needed for modern transportation engineering projects.