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Towards Sustainable Urban Policies
Dortmund Klaus Spiekermann Michael
Wegener Spiekermann Wegener (SW) Urban and
Regional Research PROPOLIS Final
Seminar Brussels, 20 January 2004
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The IRPUD Model
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Equilibrium
Incremental
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The Dortmund Region
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The Dortmund region
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Zones and super zones
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Land use
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Land use
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Transport networks
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Raster Images
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Population
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Employment
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Exposure to air pollution
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Exposure to traffic noise
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Quality of open space
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Access to open space
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The Reference Scenario
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Scenarios
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Dortmund Scenarios (1) 000 Reference
scenario 111-112 Local investment scenarios 111
Public transport investments 112 Dortmund
project 211-219 Car operating costs 211 Car
operating costs 25 212 Car operating costs
50 213 Car operating costs 100 214 Car
operating costs 75 219 Car operating costs
300 221-222 Parking costs 221 Parking costs
50 222 Parking costs 100 231-232 Cordon
pricing 231 Cordon pricing 2 232 Cordon
pricing 6
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Dortmund Scenarios (2) 311-321 Speed limits 311
Maximum speed -10 on all roads 321 Maximum
speed -20 on local roads 411-421 PT speed and
fares 411 PT travel time -10 412 PT travel
time -5 421 PT travel time -50 511-541 Land
use 511 Compact city scenario 521 Polycentric
development 541 Urban growth boundary 711-719 Co
mbination scenarios 711 Scenarios 214421 712
Scenarios 214412421 713 Scenarios
214412421521 719 Scenarios 219412421541
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Local road policies
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Local rail policies
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Compact city scenario 511
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Polycentric scenario 521
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Urban growth boundary scenario 541
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Scenario Comparison
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Evaluation
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Social v. environmental evaluation
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Conclusions
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Conclusions (1) The existing level of
sustainability cannot be maintained in the base
scenario. Transport policies making car travel
less attractive (more expensive or slower) are
very effective in reducing car mobility and
making cities more sustainable. However, these
policies depend on a not too dispersed spatial
organisation. Transport policies making public
transport more attractive (i.e. faster or less
expensive) have only little effect on car
mobility. How-ever, they contribute to further
spatial decen-tralisation of residences and
workplaces.
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Conclusions (2) Land-use policies to increase
urban density or mixed land-use or development
near pub-lic transport stations without
accompanying measures to make car travel less
attractive have only little effect on car
mobility. How-ever, these policies are important
in the long run as they provide the preconditions
for a reduction of car mobility. Policy packages
combining policies making car travel less
attractive and policies making public transport
more attractive and land-use policies to increase
urban density and mixed land use are very
effective in achieving less car-dependent cities.
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