A fantastic introduction to a world many young people--and people in general--seldom consider: how transportation engineers help to ensure people and materials move smoothly throughout our complex world. Readers are introduced to real-world problems and their engineering solutions. Lively, informative, and age-accessible language is augmented with highlighted vocabulary terms, important points to think about, items to compare and contrast, and a final, interactive exercise that brings home important concepts to the reader. This book is great for students with an interest in how trains, bikes, roads, and even natural resource pipelines work.