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A functional form for the macroscopic fundamental diagram with a physical meaning
(2017)Arbeitsberichte Verkehrs- und RaumplanungWorking Paper -
Introducing a re-sampling methodology for the estimation of empirical macroscopic fundamental diagrams
(2017)Arbeitsberichte Verkehrs- und RaumplanungThe uncertainty in the estimation of the macroscopic fundamental diagram (MFD) under real- world traffic conditions and urban dynamics, might result in an inaccurate estimation of the MFD parameters - especially if congestion is rarely observed network-wide. For example, if the observed data does not exhibit a distinct congested branch, it is hard to determine the network capacity and critical density. Similarly, as the data normally comes ...Working Paper -
Hetereogenous travel activity patterns in Japan: Accounting for inter-dependencies in mobility tool use
(2017)Arbeitsberichte Verkehrs- und RaumplanungUsing data from the Japanese 5 th nationwide person trip survey, a joint model of trip frequencies by mode (car, transit and non-motorized) is estimated using a generalized heterogeneous data model to account for inter-dependencies stemming from unobserved factors. The estimated model successfully captures the effect of common unobserved factors on trip frequencies by mode underscoring the need to account for modal inter-dependencies to ...Working Paper -
Traffic problems in towns
(2017)Arbeitsberichte Verkehrs- und RaumplanungTravel behavior in urban areas has been widely analyzed from the demand side, while the extent to which the infrastructure imposes constraints on such travel behavior and leads to delays and congestion has almost never been studied. For car-based transportation, the recently developed theory of the macroscopic fundamental diagram (MFD) describes the relationship between the accumulation of vehicles and their trip ending rate as a function ...Working Paper -
The impact of local work and residential balance on vehicle miles traveled
(2017)Arbeitsberichte Verkehrs- und RaumplanungThis paper introduces a new approach for explaining the effects of spatial competition for opportunities based on a cumulative opportunities measure of accessibility. We focus on the case of the labor market where some municipalities offer too few workplaces for their local population, forcing some of their residents to long drives. We apply this new accessibility measure to explain households’ annual mileage in Switzerland using a Heckman ...Working Paper -
Mobility tools and use: Accessibility's role in Switzerland
(2017)Arbeitsberichte Verkehrs- und RaumplanungIn much of Switzerland, quality public transport makes season tickets legitimate substitutes for a car; similar patterns of accessibility provided by both modes create a strong correlation of accessibility measures. We propose a principal component analysis of the accessibility measures to extract as much information as possible. We interpret the principal components obtained as: general accessibility, comparatively better accessibility ...Working Paper