transportation planning ce 573 course introduction and four-step travel demand moding (fstdm)
Post on 19-Dec-2015
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Transportation Planning CE 573
Course Introduction and
Four-Step Travel Demand Moding (FSTDM)
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Issues for Today
• Course introduction
• Systematic transportation system
evaluation
• Introduction to travel demand modeling
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Course Topics
– Travel demand modeling (theory and application)
– Comprehensive transportation planning– Traffic Impact Study (TIS)
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Course Web Site
www.webs1.uidaho.edu/ce573/
• Lecture materials and schedule
• Homework assignments
• Projects
• Solutions
• Grades
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Course Expectations
• Homework and memos
• Quizzes
• Projects
• Field data collection
• Visual basic for applications (VBA)
• CUBE
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Grading
• Quizzes: 35%
• Projects: 30%
• Final examination: 15%
• Homework: 20%
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Assignments
• Reading 1: Trip generation (see website)
• Homework: Due Friday 1/12 (see website)
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Comprehensive Transportation Planning Dimensions
• Economic
• Social
• Environmental
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Systematic Evaluation for Sustainability
• Can we always count on data being there?
• If we don’t have data then what can be done?
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T
Indicators
Goal
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Why Use Travel Demand Models
• A relationship between transport system and indicators– Access– Purpose– Frequency– Use T
Land use
Travel behavior
System performance
TRAVEL DEMAND MODEL
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Economic, Social, and Environmental Dimensions
• Where do they come in to this process?
System performance
TRAVEL DEMAND MODEL
Indicators
Other data
Evaluate progress to
goal
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…through performance indicators
• For example:– Commute speed– Land use mix– Transport diversity– Transport equity
Residential Employment
Service
ResidentialEmployment
Service
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Example
• Model output = travel times between all points
• Indicator: Commute speed
• Indicator: Land use mix
• Indicator: Transport diversity
• Indicator: Equity
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Introduction to Travel Demand Modeling
• What is a travel demand model• Assignment: Discuss your knowledge
– Input data– Trip generation– Trip distribution– Mode choice– Traffic/trip assignment
T
Land use
Travel behavior
System performance
TRAVEL DEMAND MODEL
T
Land use
Travel behavior
System performance
TRAVEL DEMAND MODEL
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Four Step Travel Demand Model (FSTDM)
Step 1: Trip Generation
Step 2: Trip Distribution
Step 3: Mode Choice
Step 4: Trip/ Traffic Assignment
Demographic Data
Transportation Network
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Trip Generation Questions
• How much do people use the transport system?
• Why do people use the transport system?
• Where can different types of activities be satisfied?
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Trip Distribution Questions
• Given a location, where do people go to satisfy demand for an activity type?
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Mode choice Questions
• How do people use the transport system?– What modes do they choose?– How do they react to varying transport service
quality?
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Trip / Traffic Assignment Questions
• How do people use the transport system?– Given a mode, which route do they choose?– Do they satisfy multiple activities in one tour?– Which parts of the transport system do they
use?– How do they react to varying transport service
quality?
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Demographic Data
• Autos per household
• Income level
• Household size
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Network Data
• Highway network
• Transit network
• Graph
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Representing a Network