Sustainable transport paradigm

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Sustainable Transport Paradigm
Prof. Hermann Knoflacher
Institute for Transport Science
Departmenet for Transport Planning and Traffic Engineering
Interdisciplinary Mobility and Accessibility Research
University of Technology, Vienna
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Core‐Assumptions and Working Method in Transport Planning and Traffic Engineering
Traditional Paradigm:
Growth of Mobility
Faster System –Travel-Time Saving
The Car is the Choice for Freedom
of Mobility
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GDP‐Growht – Motorization‐Growht
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The Logic of Direct Linear Conclusions
Prof. Hermann Knoflacher
Motorization in Germany 1950 ‐ 2020
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Growth of Mobility
More private cars
‐ more mobility
GDP‐Growth = Motorization Growth = Growth of Mobility
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Everyone´s Experience: Faster Transport save Travel Time
A
B
S1
S2
Speed: V2 > V1
Distance LAB
Time saving: Δt = LAB.(S2 – S1)/S1xS2
Benefit= ΣΔt x money per time
CB‐factor = Benefit/Cost > 1 (3)
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Cross Section of Urban Roads
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Effect of the paradigm: Building Motorways,
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Freedom of Mobility
• Parking Provisions on every Origin and every Destination
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Scientific and Empirical-based Paradigm
There is No Growth of Mobility
in the Transport System
There are no Travel Time Savings
in the Transport System
The Car is the Choice for Freedom
of Mobility
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Reality: shift of trips from one mode to another. The number of trips per person and day is
constant
Constant number of trips per person and day
Pedestrians, cyclists
and public transport
Motorisation
Number of trips
per person
and day
Motor car trips
Reality
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Increasing speed increase the Distance!
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30
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Average travel speed [km/h] house - house
Average
travel
length
[km]
pedestrian
cyclist
city bus
regional bus
passenger car
neighbourhood relationships
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Structures determine Behaviour
Data
Behaviour
Structure
?
?
VALUE ‐ SYSTEM
2017
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