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Transportation Planning: An Introduction

Transportation Planning: An Introduction. CE331 Transportation Engineering. Background. Issues Congestion, safety and security, … Congestion alleviation measures Increase supply Reduce demand  Need a comprehensive plan. Characteristics of Transportation Systems. Multi-modal

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Transportation Planning: An Introduction

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  1. Transportation Planning:An Introduction CE331 Transportation Engineering

  2. Background • Issues • Congestion, safety and security, … • Congestion alleviation measures • Increase supply • Reduce demand  Need a comprehensive plan

  3. Characteristics of Transportation Systems • Multi-modal Air, land, marine, pipeline Passenger, freight • Multi-sectoral Government, private industry, public • Multi-problem Policy, planning, operational, economic development, environmental, social equity, urban development • Multi-disciplinary Engineering, economics, operations research, political science

  4. Basic Questions • Where are we now? • Existing condition of urban systems • Where do we want to go? • Major issues, public opinion, opportunities and obstacles • What will guide us? • Mission statement, goals & objectives, performance measures • How will we get there? • Project implementation, policy changes

  5. Definition • Transportation planning is the process of • Establishing a vision • Understanding the types of decisions • Assessing opportunities and limitations • Identifying near & long term consequences • Relating alternative decisions • Presenting information

  6. Travel Demand Forecasting • To answer the following questions: • “Whether” to make a trip? • “Where” to make the trip? • “When” to make the trip? • “Which mode” to use? • “Which route” to take?

  7. Decision-Making Process

  8. Four-Step Process • Trip generation • Trip distribution • Modal split • Traffic assignment

  9. Land Use and Socio-economic Projections Trip Generation Trip Distribution Transportation System Specifications Modal Split Traffic Assignment Direct User Impacts

  10. Traffic Analysis Zone (TAZ) • Special-purpose geographic entity • Delineated by state and local transportation officials for tabulating traffic related data from the census such as • Journey to work • Place to work

  11. 4 Step Outcomes

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