Hochschule für Architektur, Bau und Geomatik FHNW

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  • Vorschaubild
    Publikation
    Quantifying the effect of street design on driving speed on urban roads
    (05/2023) van Eggermond, Michael; Schaffner, Dorothea; Studer, Nora; Erath, Alexander
    Reducing driving speed is a key factor in improving road safety and combatting noise emissions. Over the last decades, many European cities and countries have reduced the speed limits of residential and neighborhood roads from 50 km/h (30 mph) to 30 km/h (20 mph) or even 20 km/h (12 mph). At the same time, there is a discussion to reduce speed limits on main roads in urban areas in several countries. Main roads in urban areas are different from residential roads in several ways, including, but not limited to the type of trips, vehicular mix and the presence of public transport, and are therefore limited in design options to reduce speeds. The study at hand reports on a virtual reality study conducted in Switzerland using a driving simulator. To assess whether road design influences driving speed, participants were asked to drive through a series of streets in VR with varying speed limits and street designs. Speed and lateral position were recorded; in a follow-up survey, participants stated their preferred speed along the same segments and were asked about risk aversion. Results indicate that only certain designs result in slightly lower driving speeds, while controlling for self-reported risk aversion and driving style. Given the characteristics of main roads, measures reducing the (perceived) lane width are promising, but require further investigation.
    04B - Beitrag Konferenzschrift
  • Vorschaubild
    Publikation
    Assessing cycling skills in Switzerland
    (11/2022) van Eggermond, Michael; Schaffner, Dorothea; Studer, Nora
    For many people, safety concerns are a major barrier to ride a bicycle. Indeed, cyclists bear a higher risk than most other types of road users. Improving cycling infrastructure is the most obvious and effective way to increase cycling safety. This paper sets out to identify skills required by cyclists to navigate safely through an urban environment in Switzerland. We set out to identify situations that might result in accidents and require specific competences. This research has shown that there is potential to further develop cyclists’ skills. Rather than focusing on motoric skills or presenting simple situations, we advise that skills should be trained based on more complex situations. These situations include turning, branching, maintaining distance from parked cars and recognising right of way in residential areas.
    04B - Beitrag Konferenzschrift