Artículo de publicación ISIUsers’ perceptions are identified as key elements to understand bicycle use,
whose election cannot be explained with usual mobility variables and socio-economic
characteristics. A hybrid model is proposed to model the intention of bicycle use; it
combines a structural equations model that captures intentions and a choice model. The
framework is applied to a case of a university campus in Madrid that is studying a new
internal bike system. Results show that four latent variables (convenience, pro-bike,
physical determinants and external restrictions) help explaining intention to use bike,
representing a number of factors that are linked to individual perceptions.Fondecyt, Chile
1120316
Institute for Complex Engineering Systems
ICM: P-05-004-F
CONICYT: FBO16
IDAE (Spanish Institute for Energy Efficiency)
CRTM (Transport Authority of Madrid)
Municipality of Madri
Several international studies have analyzed the acceptability of road pricing schemes by means of an attitude survey in combination with the results of a stated choice experiment using both a descriptive analysis and a discrete-choice model with binary choice ("accept" or "not accept" the toll). However, the use of hybrid discrete choice models constitutes an innovative alternative for integrating subjective attitudes and perceptions deriving from the survey of attitudes with the more objective variables from the stated choice experiment. This paper analyzes the results of applying these models to measure the acceptability of interurban road pricing among different groups of stakeholders (road freight and passenger operators, highway concessionaires, and associations of private car users) with qualitatively significant opinions on road pricing measures. Our results show that hybrid models are better suited to explaining the acceptability of a road pricing scheme by different groups of stakeholders than a separate analysis of the survey of attitudes and a discrete-choice model applied on a stated choice experiment. A particular finding was that the strong psycho-social latent variable of the perception of fairness explains the rejection or acceptance of a toll scheme by road stakeholders.
The sustainable mobility of the future comes about through sustainable ways of transport, such as walking, cycling, or collective transport. This includes the bus, the underground, and trains in big cities. This article reviews bus-related policies and initiatives worldwide. It also analyses ten cities looking at medium and long-term strategies for the urban bus service. The main ideas are: the forecasts for the use of the urban bus system indicate a significant increase in demand, therefore, there is a need for expanding the offered services; efforts to change the fleets towards Compressed Natural Gas and Electric vehicles; support of technological innovation for communication and accessibility; improving commercial speed and frequencies by infrastructure improvements, operation optimisation and technology; and, the link between these strategies and the air quality of cities. The transition towards a sustainable transport will happen based on the belief that the bus service is no longer the transport of the past or the present, but of the future.
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