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Seminarium naukowe “Urban Sprawl: Beyond traditional premises from Land Use & Transport Planning”

dr Jorge Díaz, środa 22.03, 10:15

mamy przyjemność zaprosić Państwa na kolejne nasze seminarium Instytutu, które odbędzie się w najbliższą środę, 22 marca o godzinie 10.15 w sali 107.
Wykład poprowadzi dr Jorge Angel Díaz Tejada z Meksyku, który przebywa na naszym Wydziale w ramach programu FELLOW MUNDUS i pracuje pod opieką dr. inż. arch. Tomasza Zaborowskiego (ZGRiPP)


Tytuł wykładu: “Urban Sprawl: Beyond traditional premises from Land Use & Transport Planning


The increase in travel time and constraints regarding accessibility has been traditionally related to Urban Sprawl, mainly understood as a pattern of land development that causes a considerable increase in territorial extension[1]. Population size and density are, of course, two key inputs to provide a better assessment and see if there is a positive correlation between territorial extension, population size, and density and an increase in travel time and constraints within accessibility.

While “travel time” is a quantitative variable, “accessibility” includes also a qualitative nature that denotes, not only the ease which any land use can be reached from a location using a particular mode of transportation but also some “side-benefits” as the ease for social interaction amongst the city inhabitants.

From the cities case studies to analyze, our purpose is also to find if there is a “gap” between the performance of mobility (considering travel time and accessibility) and the hypothetical benefits of a more dense, and compact urban fabric.

The paradox within provision of public services in general and transportation facilities in particular in a city, is that the better they are, the more people they attract, leading to a “vicious circle” [2] which may be affected at some stage by the pattern of land development at the outskirts of a city and the poor quality of public transportation leading to a “gap” when the consequences upon mobility are quite exacerbated.

We aim to find new insights regarding the following questions:

Is this “gap” related to population size, density patterns and urban sprawl?
How can transport planning overcome the challenges that come from this “gap”?
Is there an optimal population size, density pattern, and travel modal split for achieving a “good living standard” (travel time and accessibility)?


[1] The term urban sprawl is highly politicized, and almost always has negative connotations.

[2] The terms virtuous circle and vicious circle (also referred to as virtuous cycle and vicious cycle) refer to complex chains of events which reinforce themselves through a feedback loop.[1] A virtuous circle has favorable results, while a vicious circle has detrimental results. Both circles are complexes of events with no tendency towards equilibrium (at least in the short run). Both systems of events have feedback loops in which each iteration of the cycle reinforces the previous one (positive feedback). These cycles will continue in the direction of their momentum until an external factor intervenes and breaks the cycle.