03 Transport planning

03 Transport planning - Lecture 3 20060215 Transport...

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1 Lecture 3 20060215 Transport Planning 4 Types of Urban Development & Nature of Problems 1. Minor improvement to Existing Neighbourhood 2. Expansion of Existing District 3. New District/New Town 4. Expansion of Metropolitan Region 1. Extra population at given locations 2. Both location & size to be decided 3. External transport routes also to be decided 4. Several new districts to be decided
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2 Capacity Requirements | Community Facilities- Increases with district population | Infrastructure- Varies with population & LU 1. SWD- Paved area has lower infiltration & higher flow speed 2. Water & Sewage- Increases with population & population density 3. Transport service, Roads, ATC system- Additionally varies with population distribution Need relationship between LU & transport demand Transport Need Generated by human activities | Personal travel demand- population led | Goods transport- Industry led | Trip- From A to B and back
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3 4 Trip Purposes | Work – From Home to Employment place | School – From Home to School | Other Home-based – For social & household activities, (shopping, visiting friends) | Non-home-based – visiting clients, attending meeting, attending to service order, delivering letters Aggregation of Trip Ends | Assume all generation & attraction trip ends to be concentrated at centroid of traffic zones. | Centroidal link connects centroid to transport network nodes | Interzonal trips from centroid A to centroid B via network | Intrazonal trips – cost & time are estimated separately
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4 Trip Distribution | Individual person’s choice of trip from nodes A1 to B1 or B2 --- | Total result:- Origin-Destination matrix Tij of Trip volume from Zone 1 to Zone 2, 3, etc. Urban Transport Modes Various Europe Walking and public transportation system Asian cities Auto USA Bicycles Mainland and Holland Major transport modes Country
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5 Modal Choice | Personal choice of walking, cycling, bus, rail or car for making a trip for given purpose | Total result;- statistical distribution of personal trip volume by mode and purpose Travel Route Choice | Person choice – influenced by cost, time; comfort, scenery, etc | Total result – Statistical distribution of traffic volume on each transport link
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6 Modeling for Transport Planning Transport system performance as function of population & infrastructure capacity (fully developed since 1960’s) Transport Service & infrastructure Transport Demand Land use Population distribution 4-Stage Transport Model well-proven, used in all major TP studies | Trip Generation | Trip Distribution | Modal Split | Traffic Assignment
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7 Setting Model Details Causal variables & complexity of mathematical function to suit | Purpose of study |
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This note was uploaded on 03/26/2012 for the course CIVIL 6049 taught by Professor Can'tremember during the Spring '12 term at HKU.

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03 Transport planning - Lecture 3 20060215 Transport...

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