@article{Prieto_traffic_2021,
title = {A paradox of traffic and extra cars in a city as a collective behaviour},
author = {Prieto-Curiel, Rafael and González-Ramírez, Humberto and Quiñones, Mauricio and Orjuela-Mendoza, Juan Pablo},
editor = {The Royal Society Publishing},
url = {https://doi.org/10.1098/rsos.201808},
doi = {10.1098/rsos.201808},
issn = {2054-5703},
year = {2021},
date = {2021-06-23},
journal = {R. Soc. Open Sci.},
volume = {8},
number = {6},
pages = {17},
abstract = {
Promoting walking or cycling and reducing cars’ use is one of the city planners’ main targets, contributing to a sustainable transport method. Yet, the number of vehicles worldwide is increasing as fast as the population, and motorized mobility has become the primary transport method in most cities. Here, we consider modal share as an emergent behaviour of personal decisions. All individuals minimize their commuting time and reach an equilibrium under which no person is willing to change their transportation mode. In terms of the minimum travel time, the best-case scenario is used to determine the extra commuting time and the excess cars, computed as a social inefficiency. Results show that commuting times could increase up to 25% with many more vehicles than optimum. Paradoxically, all individuals trying to minimize their time could collectively reach the maximum commuting times in the extreme case, with all individuals driving during rush hour.},
keywords = {Transporte en ciudades del sur global},
pubstate = {published},
tppubtype = {article}
}

@article{prieto_heartbeat_2021,
title = {The heartbeat of the city},
author = {Prieto-Curiel, Rafael and Patiño, Jorge E. and Duque, Juan C. and O'Cleary, Neave},
url = {https://doi.org/10.1371/journal.pone.0246714},
doi = {10.1371/journal.pone.0246714},
isbn = {1932-6203},
year = {2021},
date = {2021-02-24},
journal = {Plos One},
volume = {16},
number = {2},
pages = {30},
abstract = {Human activity is organised around daily and weekly cycles, which should, in turn, dominate all types of social interactions, such as transactions, communications, gatherings and so on. Yet, despite their strategic importance for policing and security, cyclical weekly patterns in crime and road incidents have been unexplored at the city and neighbourhood level. Here we construct a novel method to capture the weekly trace, or “heartbeat” of events and use geotagged data capturing the time and location of more than 200,000 violent crimes and nearly one million crashes in Mexico City. On aggregate, our findings show that the heartbeats of crime and crashes follow a similar pattern. We observe valleys during the night and peaks in the evening, where the intensity during a peak is 7.5 times the intensity of valleys in terms of crime and 12.3 times in terms of road accidents. Although distinct types of events, crimes and crashes reach their respective intensity peak on Friday night and valley on Tuesday morning, the result of a hyper-synchronised society. Next, heartbeats are computed for city neighbourhood ‘tiles’, a division of space within the city based on the distance to Metro and other public transport stations. We find that heartbeats are spatially heterogeneous with some diffusion, so that nearby tiles have similar heartbeats. Tiles are then clustered based on the shape of their heartbeat, e.g., tiles within groups suffer peaks and valleys of crime or crashes at similar times during the week. The clusters found are similar to those based on economic activities. This enables us to anticipate temporal traces of crime and crashes based on local amenities.},
keywords = {crimen, ODS 11, Transporte en ciudades del sur global},
pubstate = {published},
tppubtype = {article}
}

@article{ospina2020database,
title = {A database to analyze cycling routes in Medellin, Colombia},
author = {Ospina, Juan P. and López-Ríos, Víctor I. and Botero-Fernández, Verónica and Duque, Juan C.},
url = {https://doi.org/10.1016/j.dib.2020.106162},
doi = {10.1016/j.dib.2020.106162},
issn = {2352-3409},
year = {2020},
date = {2020-10-01},
journal = {Data in Brief},
volume = {32},
number = {106162},
pages = {1-14},
abstract = {A bicycle route questionnaire was designed to collect information about the characteristics of cyclists and the routes they take. Medellin is used as a case study in this paper due to its strong sociodemographic inequality, land use, urban form diversity, and topographical variability. The survey execution targeted bicycle commuters in the city by distributing the questionnaires online, personally by telephone, and personally on the street. These data will be useful to support strategies aiming to promote bicycling as a mode of transportation. Several types of analysis may be derived from the data, including an explanation of the factors determining the route choice and route comparisons according to the sociodemographics and locations of users. For instance, these data have already been used by Ospina et al. (2020) where they sought to understand cycling travel distance in Medellin city.},
keywords = {bicicletas, Transporte en ciudades del sur global},
pubstate = {published},
tppubtype = {article}
}

@article{ospina2020understanding,
title = {Understanding cycling travel distance: The case of Medellin city (Colombia)},
author = {Ospina, Juan P. and Botero-Fernández, Verónica and Duque, Juan C. and Brussel, Mark},
url = {https://doi.org/10.1016/j.trd.2020.102423},
doi = {10.1016/j.trd.2020.102423},
issn = {1361-9209},
year = {2020},
date = {2020-09-01},
journal = {Transportation Research Part D: Transport and Environment},
volume = {86},
number = {102423},
pages = {1-22},
abstract = {The relevance of cycling as a mode of transportation is increasingly being recognized in many cities around the world, and the city of Medellin (Colombia) is no exception. To better understand cycling travel behavior in Medellin, we perform a multiple regression to analyze the importance of route characteristics in explaining cycling travel distance. We control for socioeconomic and built environment variables at the origin and destination. Our results reveal that the effects of the socio-economic and built environment characteristics at the origin and destination are modest or statistically insignificant in explaining travel distance. However, the variables that characterize the built and natural environment along the route are significant and appreciably improve the explanatory power of the baseline econometric model. An analysis of interacting effects shows that the interaction between the dedicated infrastructure along the route and the degree of deviation from direct routes has a relevant effect on explaining travel distance. The findings of this work are useful for designing cycling policy and developing more usable cycling infrastructure.},
keywords = {bicicletas, Transporte en ciudades del sur global},
pubstate = {published},
tppubtype = {article}
}