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**Harvard**

Lodin, J. (2011) *Road Growth Modeling*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Lodin2011,

author={Lodin, Johan},

title={Road Growth Modeling},

abstract={Land development and infrastructure growth are two co-evolving processes. When studying long-term urban evolution it is useful to model both processes in parallel but co-dependently. The focus in this thesis is a novel road growth model that extends and adapts an existing land use model. The model transforms land use into interactions—a form of abstract traffic-like quantities—between every pair land lots. Each interaction needs to find a path from its start lot to its destination. If it is more efficient to extend the existing road network then a new road is suggested. Though each land lot pair acts independently when finding the path between the pair, a level co-operation occurs in the model as suggestions may add up. The model formulation turns out to have a scale-invariant property and a possible connection to the fractal-like structures of real road networks is explored. The model is open-ended with regards to the underlying geography, but makes several simplifications; only one type of traffic is considered, all roads have infinite capacity and equal speed limits, and travel time is approximated by ailabi-lity and Euclidean distance. Care has been taken to make the model implementable in a computer with a reasonable amount of working memory even when there are many land lots, at the cost of increased computing power. A large part of the model is however parallelizable and some ap-
plicable time-saving techniques are recognized. A brief overview of relevant aspects of infrastructure in general—and road networks in particular—is also presented, giving a basis for model evaluation.},

publisher={Institutionen för energi och miljö, Fysisk resursteori, Chalmers tekniska högskola},

place={Göteborg},

year={2011},

note={35},

}

** RefWorks **

RT Generic

SR Print

ID 177752

A1 Lodin, Johan

T1 Road Growth Modeling

T2 The Development of a Road Growth Model That Co-Evolves with Land Use

YR 2011

AB Land development and infrastructure growth are two co-evolving processes. When studying long-term urban evolution it is useful to model both processes in parallel but co-dependently. The focus in this thesis is a novel road growth model that extends and adapts an existing land use model. The model transforms land use into interactions—a form of abstract traffic-like quantities—between every pair land lots. Each interaction needs to find a path from its start lot to its destination. If it is more efficient to extend the existing road network then a new road is suggested. Though each land lot pair acts independently when finding the path between the pair, a level co-operation occurs in the model as suggestions may add up. The model formulation turns out to have a scale-invariant property and a possible connection to the fractal-like structures of real road networks is explored. The model is open-ended with regards to the underlying geography, but makes several simplifications; only one type of traffic is considered, all roads have infinite capacity and equal speed limits, and travel time is approximated by ailabi-lity and Euclidean distance. Care has been taken to make the model implementable in a computer with a reasonable amount of working memory even when there are many land lots, at the cost of increased computing power. A large part of the model is however parallelizable and some ap-
plicable time-saving techniques are recognized. A brief overview of relevant aspects of infrastructure in general—and road networks in particular—is also presented, giving a basis for model evaluation.

PB Institutionen för energi och miljö, Fysisk resursteori, Chalmers tekniska högskola,

LA eng

OL 30