Deconstructing laws of accessibility and facility distribution in cities

Yanyan Xu, Luis E. Olmos, Sofiane Abbar and Marta C. González

Science Advances
September 11, 2020

Abstract: The era of the automobile has seriously degraded the quality of urban life through costly travel and visible environmental effects. A new urban planning paradigm must be at the heart of our road map for the years to come, the one where, within minutes, inhabitants can access their basic living needs by bike or by foot. In this work, we present novel insights of the interplay between the distributions of facilities and population that maximize accessibility over the existing road networks. Results in six cities reveal that travel costs could be reduced in half through redistributing facilities. In the optimal scenario, the average travel distance can be modeled as a functional form of the number of facilities and the population density. As an application of this finding, it is possible to estimate the number of facilities needed for reaching a desired average travel distance given the population distribution in a city.

Read more:

Simulations for more equitable cities: A new approach could guide city planners where best to place important facilities for more equitable access of residents
September 11, 2020  |  Letizia Diamante  |   Nature Middle East

Making cities more liveable: Scientists develop an eco-friendly urban framework 
September 12, 2020  |   Natalie Parletta  |  Cosmos Magazine, 


Featured Fellows

Marta C. González

City and Regional Planning, Civil and Environmental Engineering, UC Berkeley; Energy Analysis & Environmental Impacts Division, LBNL
BIDS Faculty Council