01 Introduction (Traffic Engineering هندسة المرور & Prof. Saad AlGadhi)
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This document provides an overview of the CE 436: Traffic Engineering course taught by Prof. Saad AlGadhi at King Saud University. The course covers fundamentals of traffic engineering, including data collection, analysis, facility design, traffic control, and operations. Grading is based on attendance, homework, projects, exams. The course introduces concepts like traffic studies, performance measurement, transportation demand modeling, and emerging topics like intelligent transportation systems. The goal is for students to learn quantitative techniques to evaluate and design signalized intersections.
01 Introduction (Traffic Engineering هندسة المرور & Prof. Saad AlGadhi)
- 1. CE 436: Traffic Engineering Topic 1: Introduction Prof. Saad AlGadhi CE 436 –Traffic Engineering King Saud University email: salgadhi@ksu.edu.sa
- 2. CE 430_KSU_Prof.AlGadhi 2 Instructor Prof. Saad A. AlGadhi Office: 2A 67 Email: salgadhi@ksu.edu.sa Course Notes: LMS.ksu.edu.sa
- 3. CE 436_KSU_Prof.AlGadhi 3 Prerequisite/Grading/Textbook Prerequisite: CE 430_Transportation Systems Grading: Attendance/Quizzes 10 % Homework 15% Project 15 % Mid-term Exam 20 % Final Exam 40 % Textbook: Roess, R.P., Prassas, E.S., and McShane, W. R., “Traffic Engineering”, Fourth Edition, Prentice-Hall, 2011.
- 4. CE 436_KSU_Prof.AlGadhi 4 Course Description and Objectives Introduction to fundamentals of traffic engineering, including data collection, analysis, and design. Traffic engineering studies, traffic control devices, capacity and level of service analysis of freeways and urban streets. Design of isolated intersection and coordinated traffic signal control systems. The objective of this course is to introduce students to traffic engineering fundamentals for highways and freeways. Emphasis is on the safe and efficient operations of roadway intersections.
- 5. CE 436_KSU_Prof.AlGadhi 5 Course Outcomes By the end of this course, students should be able to: Obtain an understanding of the fundamentals of traffic engineering Learn quantitative techniques for solving basic traffic engineering problems Apply the principles of traffic engineering to evaluate, analyze, and design timing plans for signalized intersections Demonstrate the capability to write a technical report and communicate the results of their solution approach to other engineering professionals
- 6. CE 436_KSU_Prof.AlGadhi 6 Transportation Engineering Definition from the Institute of Transportation Engineering (ITE): “Transportation engineering is the application of technology and scientific principles to the planning, functional design, operation, and management of facilities for any mode of transportation in order to provide for the safe, rapid, comfortable, convenient, economical, and environmentally compatible movement of people and goods.”
- 7. CE 436_KSU_Prof.AlGadhi 7 What is Traffic Engineering? Definition from the Institute of Traffic Engineering (ITE): “The phase of transportation engineering that deals with the planning, geometric design and traffic operations of roads, streets, and highways, their networks, terminals, abutting lands and relationship with other modes of transportation”
- 8. CE 436_KSU_Prof.AlGadhi 8 Traffic Engineering Objectives Primary Objective Safety Other Objectives Speed Comfort Convenience Economy Environmental Compatability
- 9. CE 436_KSU_Prof.AlGadhi 9 Transportation System Functions 1. Safety vs. Efficiency 2. Mobility vs. Accessibility
- 10. CE 436_KSU_Prof.AlGadhi 10 Elements of Traffic Engineering 1. Traffic Studies and Characteristics 2. Performance Evaluation 3. Facility Design 4. Traffic Control 5. Traffic Operations 6. Transportation System Management 7. Intelligent Transportation Systems
- 11. CE 436_KSU_Prof.AlGadhi 11 Traffic Engineering History
- 12. CE 436_KSU_Prof.AlGadhi 12 Challenges A. Rehabilitation and Reconstruction B. Serving Growing Urban Traffic Demand C. Development Impacts D. Growth Management E. Regional Economic Development
- 13. CE 436_KSU_Prof.AlGadhi 13 Traffic Engineering
- 15. CE 436_KSU_Prof.AlGadhi 15 Collection Reduction Analysis 1.Studies and Data Collection “JAMAR” Type Field Analyzers. 2. Geometric Design AutoCAD, Integraph 3. Capacity HCS, Simulation Models such as Paramics, Vissim, Aimsun2, SimTraffic, etc. 4. Control, Operation and Management T7F, PASSER, SYNCHRO, etc. TOOLBOX
- 16. CE 436_KSU_Prof.AlGadhi 16 Concept of Vehicles versus Persons Movement 1 lane of freeway carries 2200 pcph 1 lane of a street arterial carries 800 pcph Auto occupancy of 1.1 pass/vehicle 3 lane freeway may carry up to 7260 pass/hour 1 bus lane handles 100 buses/hour 3 bus lanes may carry up to 3(50)(100)= 15,000 pass/hour Light rail transit capacity = 20,000 pass/hour Heavy rail transit headway @ 2 minutes HRT capacity can be 30(2,000) = 60,000 pass/hour
- 17. CE 436_KSU_Prof.AlGadhi 17 Travel Demand (1) Trip Generation: How many trips will be generated by a particular site and when will they occur? • Facilities rates (ITE Trip Generation Handbook by Sq. ft. and # of employees) • Household (Proxy variables, e.g. income, HH size, # of vehicles) Regression Analysis
- 18. CE 436_KSU_Prof.AlGadhi 18 Travel Demand (2)
- 19. CE 436_KSU_Prof.AlGadhi 19 Travel Demand (3)
- 20. CE 436_KSU_Prof.AlGadhi 20 Travel Demand (4)
- 21. CE 436_KSU_Prof.AlGadhi 21 Performance Measure Purpose: 1. Assess Existing Conditions 2. Evaluate Alternative Improvements 3. Quantify Associate Costs and Benefits Level of Service (LOS): A - F Determination of Highway Capacity
- 22. CE 436_KSU_Prof.AlGadhi 22 Measure of Effectiveness (MOEs)
- 23. CE 436_KSU_Prof.AlGadhi 23 Measure of Effectiveness (MOEs)
- 24. CE 436_KSU_Prof.AlGadhi 24 Temporal Distribution of Trips
- 25. CE 436_KSU_Prof.AlGadhi 25 Traffic Engineering Options
- 26. CE 436_KSU_Prof.AlGadhi 26 Transportation System Management (TSM)
- 27. CE 436_KSU_Prof.AlGadhi 27 Transportation Demand Management (TDM)
- 28. CE 436_KSU_Prof.AlGadhi 28 Emerging Issues and Trends Intelligent Transportation System(ITS) “ITS collect, store, process and distribute information relating to the movement of people and goods. Examples include systems for traffic management, public transportation management, emergency management, traveler information, advanced vehicle control and safety, commercial vehicle operations, electronic payment and railroad grade crossing safety.” ---US DOT’s ITS Joint Program Office
- 29. CE 436_KSU_Prof.AlGadhi 29 What is ITS? ITS involves the application of advanced technology to enhance safety, provide services to travelers, and assist transportation system operators in implementing suitable traffic management strategies.
- 30. CE 436_KSU_Prof.AlGadhi 30 What is ITS?
- 31. CE 436_KSU_Prof.AlGadhi 31 ITS Solutions Include: Transportation Management Traffic Operations Centers Communications Incident Management Public Transportation Traveler Information Enhanced Safety (e.g. Saher)
- 32. CE 436_KSU_Prof.AlGadhi 32 Reading Materials Textbook Chapter 1, pp. 11-25