1. An urban designers’ road hierarchy
WSEAS URBAN PLANNING and TRANSPORTATION (UPT'07)
Heraklion, Crete Island, Greece, July 22-24, 2008
Prof.dr.ir. Taeke M. De Jong, chair Technical Ecology And Methodology, Regional Design
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Faculty of Architecture, department Urbanism

2. Factor 3, at minimum perimeter orthogonal by hierarchy
Hildebrandt and Tromba (1989)
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3. Networkvariants with equal density
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4. Nominal measures of a road hierarchy
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5. Variants of 3 supposed profiles
Cerda (1867): 20 30 50
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6. Capacities
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7. Intensities
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8. Use, noise and house price
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9. A factor 3 hierarchy in reality
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10. 20m, 30, 50m
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11. Nominal hierarchy of dry connections
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12. Wet connections: the same nominal hierarchy
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13. Names of networks
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14. Superposition of networks
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15. Interference of networks
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16. Conclusion
Assuming a apparently timeless rational factor 3 between the levels of a road hierarchy
offers the opportunity:
to make a preliminary global traffic model to be checked afterwards by experts
stressing a total network with all road classes
rather than calculating the temporary requirements of separate roads;
keeping awareness of regularities in the existing urban tissue to be applied in urban design.
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17. Conclusion (2) The model can globally predict
traffic intensities and potentials of future connections
without extensive research of origins and destinations between traffic poles.
It is simple and visually convincing for administrators and designers, open to
professional criticism
improvements and adaptations to local contexts.
It can be integrated with wet networks modeled in the same way to predict its expensive crossings.
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18. Simulations
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19. Levels of scale
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20. Stretching
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21. Interference
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22. Road classes
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23. Profiles
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24. Capacity per lane
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25. Lane widths and curves
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26. Vehicle properties
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27. Turning loops
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28. Terminus loops
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29. Noise calculation
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30. Modal split
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31. Public transport
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32. Tunnels
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33. Free downloadable from http://team.bk.tudelft.nl
These simulations are free downloadable
as an Excel sheet from
>
Publications 2008 >
traffic.xls
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