An urban designers’ road hierarchy

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Presentation transcript:

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 December 31, 2018 Faculty of Architecture, department Urbanism

Factor 3, at minimum perimeter orthogonal by hierarchy Hildebrandt and Tromba (1989) December 31, 2018

Networkvariants with equal density December 31, 2018

Nominal measures of a road hierarchy December 31, 2018

Variants of 3 supposed profiles Cerda (1867): 20 30 50 December 31, 2018

Capacities December 31, 2018

Intensities December 31, 2018

Use, noise and house price December 31, 2018

A factor 3 hierarchy in reality December 31, 2018

20m, 30, 50m December 31, 2018

Nominal hierarchy of dry connections December 31, 2018

Wet connections: the same nominal hierarchy December 31, 2018

Names of networks December 31, 2018

Superposition of networks December 31, 2018

Interference of networks December 31, 2018

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. December 31, 2018

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. December 31, 2018

Simulations December 31, 2018

Levels of scale December 31, 2018

Stretching December 31, 2018

Interference December 31, 2018

Road classes December 31, 2018

Profiles December 31, 2018

Capacity per lane December 31, 2018

Lane widths and curves December 31, 2018

Vehicle properties December 31, 2018

Turning loops December 31, 2018

Terminus loops December 31, 2018

Noise calculation December 31, 2018

Modal split December 31, 2018

Public transport December 31, 2018

Tunnels December 31, 2018

Free downloadable from http://team.bk.tudelft.nl These simulations are free downloadable as an Excel sheet from http://team.bk.tudelft.nl/ > Publications 2008 > traffic.xls December 31, 2018