Traffic and Highway Engineering

 Traffic and Highway Engineering

Traffic and Highway Engineering

Traffic and Highway Engineering, Fourth Edition, is designed for students in engineering programs where courses in transportation, highway, or traffic engineering are offered. In most cases, these courses are taught in the third or fourth year but are also covered at the graduate level. This book also is designed to serve as a professional reference. Thus, the objectives of this textbook are: (1) To be a contemporary and complete text in highway and traffic engineering that can be used primarily at the undergraduate level. It may be used at the graduate level for courses that emphasize highway topics. Due to its complete coverage of the material, the textbook is designed for flexible use in developing a single course or for use in two or more courses. (2) To serve as a reference for engineers in the highway field and as a study guide for use in preparing for the professional engineering license exam, review courses, and preparation for graduate comprehensive exams in transportation engineering.
Since the subject of transportation engineering is a broad one, several approaches can be used to introduce this topic to students. One approach is to cover all transportation modes—air, highway, pipeline, public, rail, and water—in an overview-type course. This approach ensures comprehensive coverage but tends to be superficial with uneven coverage of some modes and can be lacking in depth. A second approach is to present the subject of transportation by generic elements, such as vehicle and
guideway characteristics, capacity analysis, planning, design, safety, human factors, administration, finance, system models, information technology, operations, and so forth. This approach is appealing because each of the modes is considered within a common context and the similarities between various modes are emphasized. Our
recent textbook, Transportation Infrastructure Engineering: A Multi-Modal Integration, is based on this concept. A third approach is to emphasize one mode, such as highways, airports, maritime, transit, or railroads, where the material is specific and unambiguous and the subject matter can be directly applied in practice. There is con-
siderable pedagogical merit in focusing on one mode, which is followed herein.

This book emphasizes the subject of traffic and highway engineering, which is a major area within civil engineering. It appeals to students because they can relate directly to problems created by motor vehicle travel. We believe that this topic is appropriate within a transportation curriculum or as an introductory transportation course because it provides an opportunity to present material that is not only useful to engineering students who may pursue careers in or related to transportation engineering, but is also interesting and challenging to those who intend to work in other areas. Furthermore, this book can serve as a reference for practicing transportation engineers and for use by students in graduate courses. Thus, our overall objective is to provide a way for students to get into the area of transportation engineering, develop a feel for what it is about, and thereby experience the challenges of the profession.
The text chapters present materials that will help students understand the basis for transportation, its importance, and the extent to which transportation pervades our daily lives. The text also provides information about the basic areas in which transportation engineers work: traffic operations and management, planning, design, construction, and maintenance. Thus, this book has been categorized into five parts:
Part 1, Introduction (to the profession, its history, systems, and organizations)
Part 2, Traffic Operations;
Part 3, Transportation Planning;
Part 4, Location, Geometrics, and Drainage; and
Part 5, Materials and Pavements.
The topical division of the book organizes the material so that it may be used in one or more separate courses. For a single course in transportation engineering, which is usually offered in the third year where the emphasis is on traffic and highway
aspects, we recommend that material from Parts 1, 2, and 3 (Chapters 1–13) be covered. For a course in highway engineering, where the emphasis is on highway location,design, materials, and pavements, we recommend that material from Parts 2, 4, and 5
(Chapters 3 and 14–21) be used. A single introductory course in transportation facil-
ities design could include Chapters 1, 2, 3, 14, 15, 16, 19, and 21.

The book also is appropriate for use in a two-semester sequence in transportation engineering in which traffic engineering and planning (Chapters 3–13) would be cov-
ered in the first course, and highway design (Chapters 14–21) would be covered in the second course.
The success of our textbook has been a source of great satisfaction, because we believe that it has contributed to the better understanding of highway transportation in all its dimensions. We wish to thank our colleagues and their students for selecting
this book for use in transportation courses taught in colleges and universities throughout the United States. The fourth edition builds on this experience and the success of our pedagogic approach, which is to include many examples in each chapter that illustrate basic concepts, a list of references, a comprehensive problem set at

the end of each chapter (with complete instructor’s manual), an organizational structure that subdivides the material into logical and easy-to-understand elements, and a large number of tables and diagrams that augment the text and ensure completeness
of material.

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