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Alizadehsaravi, L. (author), Moore, J.K. (author)
With aging, the sensory, motor, and central nervous system deficiencies lead to inadequate bicycle postural control in older cyclists. Similarly, variety in riding skills leads to different bicycle postural control strategies. Cycling seems to be an automated task but keeping the bicycle stable at low speed, pedaling, and steering requires...
conference paper 2022
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Loder, Allister (author), Bressan, Lea (author), Wierbos, M.J. (author), Becker, Henrik (author), Emmonds, Andy (author), Obee, Martin (author), Knoop, V.L. (author), Menendez, Monica (author), Axhausen, Kay W. (author)
Interactions among different modes or vehicle classes in urban road networks affect the network performance in different and complex ways. Thus, an answer to the question of “how many cars are too many for a city?” is not trivial. However, multi-modal macroscopic fundamental diagrams (MFD) offer a novel opportunity to answer this question. So...
journal article 2021
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Schneider, F. (author), Daamen, W. (author), Hoogendoorn, S.P. (author)
A largely overlooked mode choice factor of cycling is the mode-dependent capability of visiting several activity locations within a trip chain. Due to the bicycle’s limited reach in comparison to the car, this capability can be increased by urban environments that facilitate trip chaining by bicycle. In the present paper, we empirically study...
journal article 2021
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Wierbos, M.J. (author), Knoop, V.L. (author), Hanseler, F.S. (author), Hoogendoorn, S.P. (author)
Bicycles are gaining popularity as a mode of transport resulting in a mixed bicycle–car traffic situation on urban roads. Cyclists however, are hardly included in traffic flow models which complicates the design of safe and congestion-free traffic situations. This work introduces class-specific speed functions based on two variables, being space...
journal article 2020
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Rijsman, Lotte (author), van Oort, N. (author), Ton, D. (author), Hoogendoorn, S.P. (author), Molin, E.J.E. (author), Teijl, Thomas (author)
Pollution and congestion are important issues in urban mobility. These can potentially be solved by multimodal transport, such as the bicycle-Transit combination, which benefits from the flexible aspect of the bicycle and the wider spatial range of public transport. In addition, the bicycle can increase the catchment areas of public transport...
conference paper 2019
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Schwab, A.L. (author), Dialynas, G. (author), Happee, R. (author)
The bicycle, being unstable at low speed and marginally stable at high speed, is sensitive to lateral perturbations. One of the major lateral perturbations is crosswind, which can lead to accidents and fatalities. Here we investigate the effect of crosswind on the lateral dynamics and control of the bicycle in a wide range of forward speeds and...
conference paper 2018
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Dialynas, G. (author), Happee, R. (author), Schwab, A.L. (author)
Since the 1800s, the design of bicycles involves a mechanical linkage between the handlebar and the fork assembly. Herein, we propose an innovation, where the traditional mechanical connection between the handlebar and fork is decoupled and replaced with sensors, servomo-tors and a microcontroller allowing artificial manipulation of the bicycle...
conference paper 2018
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Bazilinskyy, P. (author), Heisterkamp, Niels (author), Luik, Philine (author), Klevering, Stijn (author), Haddou, Assia (author), Zult, Michiel (author), Dialynas, G. (author), Dodou, D. (author), de Winter, J.C.F. (author)
A common limitation in human factors research is that vehicle simulators often lack perceptual fidelity. Video games, on the other hand, are becoming increasingly realistic and may be a promising tool for simulator-based human factors research. In this work, we explored whether an off-the-shelf video game is suitable for research purposes. We...
conference paper 2018
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Ramos, C.A. (author)
The context for this thesis is the concern that people who practice physical activity are more susceptible to air pollution. For the studies presented here, three perspectives of physical activity were considered: in indoor, i) physical activity in fitness centers; in outdoor ii) the use of bicycle in cycle paths; and iii) active transportation....
doctoral thesis 2016
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Schwab, A.L. (author), Kooijman, J.D.G. (author)
The goal of the Human Power Team from the TU Delft and the Free University of Amsterdam is to break the world speed record in unpaced cycling (Sam Whittingham, 133.28 km/h). The design of such a faired recumbent bicycle is a challenge. The Delft design, called VeloX (Human Power Team (2013)), is a fully-faired monocoque front-driven recumbent...
conference paper 2014
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Boon, K.M. (author), Klap, P. (author), Van Lanen, J.A. (author), Letsoin, G.J. (author), Jansen, A.J. (author)
The paper presents the answer to the question how pedalling on a specific recumbent bicycle, such as the VeloX3, influences a cyclist’s ability to steer the bicycle. The research aims to find the correlation between pedalling and the undesired steering movements it creates. To test this assumption a test setup was constructed. On this setup...
journal article 2014
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Schepers, P. (author), Heinen, E. (author), Methorst, R. (author), Wegman, F.C.M. (author)
Bicycle-motor vehicle crashes are concentrated along distributor roads where cyclists are exposed to greater volumes of high-speed motorists than they would experience on access roads. This study examined the road safety impact of network-level separation of vehicular and cycle traffic in Dutch urban networks, a strategy for which the term ...
journal article 2013
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Van Goeverden, C.D. (author), Van Arem, B. (author), Godefrooij, T. (author)
In the Netherlands, the share of the bicycle as the main mode in all person trips has been highly constant in the past three decades (about 27%). A constant share is remarkable because a number of developments in this period were unfavourable for bicycle use, like ageing of the population, growing number of immigrants, increasing car ownership,...
conference paper 2013
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Van Goeverden, C.D. (author), Godefrooij, T. (author), Van Arem, B. (author), Van Nes, R. (author)
In the Netherlands, the share of the bicycle as the main mode in all person trips has been highly constant in the past three decades (about 27%). A constant share is remarkable because developments in this period were mainly unfavourable for bicycle use, like ageing of the population, growing number of immigrants, increasing car ownership, and a...
conference paper 2013
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Schepers, P. (author), Hagenzieker, M.P. (author), Methorst, R. (author), Van Wee, G.P. (author), Wegman, F.C.M. (author)
Scientific literature lacks a model which combines exposure to risk, risk, and the relationship between them. This paper presents a conceptual road safety framework comprising mutually interacting factors for exposure to risk resulting from travel behaviour (volumes, modal split, and distribution of traffic over time and space) and for risk ...
journal article 2013
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Epema, H.K. (author), Van den Brand, S. (author), Gregoor, W. (author), Kooijman, J.D.G. (author), Pereboom, H.P. (author), Wielemaker, D.C. (author), Van der Zweep, C.J. (author)
The current International Human Powered Vehicle Association world records for faired bicycles stand at 133.284km/h for the 200m flying start speed record and 91.562 km for the hour record. Traditionally the recumbent bicycles that have been developed for breaking one of either of these records have been optimized around a specific, relatively...
journal article 2012
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Kooijman, J.D.G. (author)
Bicycle designers traditionally develop bicycles based on experience and trial and error. Adopting modern engineering tools to model bicycle and rider dynamics and control is another method for developing bicycles. This method has the potential to evaluate the complete design space, and thereby develop well handling bicycles for specific user...
doctoral thesis 2012
document
Heinen, E. (author), Maat, K. (author), Van Wee, G.P. (author)
Increasing the number of people cycling to work brings a number of benefits: it can lead to reductions in air pollution and traffic jams, and increases people’s physical activity levels. We investigated the extent to which work-related factors influence (1) whether an individual decides to cycle to work, and (2) whether an individual cycles to...
journal article 2012
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Annega, G. (author)
The Netherlands is a country known for its extensive use of bicycles as a means of everyday transport. However, while it has existed for about two centuries, todays bicycles only differ from those of the 19th century in relatively small details. Human Power Team Delft is building a whole new type of bicycle with the potential to break the world...
journal article 2011
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Heinen, E. (author)
Cycling is cheaper, healthier and in urban environments often faster than other transport modes. Nevertheless, even at short distances, many individuals do not cycle. This thesis aims to explain why commuters vary in their decision to bicycle. Results indicate that the individual (day-to-day) choice to commute by bicycle is affected by personal...
book 2011
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