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- Almlöf, Erik, 1985-
(författare)
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Exploring societal impacts of self-driving public transport using four-step transport models
- 2022
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- During the last decade, self-driving technology has become increasingly visible in the news, with the vision that people would enter vehicles that drive themselves, and that people could instead rest, read the newspaper, or have a meeting. However, these visions have mainly focused on the potential for car usage, even though public transport could benefit greatly from self-driving technology. For bus traffic, the bus driver accounts for half of the cost of driving, and savings on personnel costs could, for example, be reinvested in expanded public transport service or used to lower taxes.At the same time, more research has shown potential problems linked to self-driving technology, for example that more comfortable driving would lead to more traffic, which in turn would lead to increased emissions, higher noise levels in cities or further focus on car-centric infrastructure. For public transport, the driver's role in creating safety and acting as problem solvers has also been emphasized - who should I ask for directions if there is no knowledgeable driver on board?Various methods have previously been used to explore the social effects of self-driving technology and in this dissertation I have used so-called "four-stage models", more specifically the Swedish transport model Sampers. Four-stage models have been used for 50 years to evaluate effects on the transport system from e.g. infrastructure changes, but these models face new challenges, handling vehicles that drive by themselves. In my research, I have adjusted the model to simulate self-driving technology and investigated what effects this has on, for example, traffic volumes and emissions.In the three articles that are part of the dissertation, I have four main conclusions:Self-driving technology can mean large savings in costs for public transport, primarily for bus traffic but also to some extent for rail traffic. In addition, a smoother driving behaviour would mean more comfortable travel, which would increase the attractiveness of public transport. In addition, public transport not limited by, for example, driver schedules or current commercial conditions, could develop new types of services, such as on-demand public transport.Four-stage models have previously been used to model the transport system and have been shown to have good results, at least at an overall level. Within my research, I have made some adaptations of these models to mimic self-driving technology, but the models in their current form cannot consider, for example, vehicle sharing.It is important to point out that bus and train drivers currently perform many tasks that are not directly related to the driving of the vehicle, such as answering questions, maintaining social order among passengers and taking care of faults that occur during the trip. Today, self-driving technology cannot fulfil these roles.Self-driving technology for public transport would affect people's accessibility, driving style for vehicles, safety on board, how we plan traffic and the people who currently work as drivers. In fact, a multitude of societal effects have been identified, affecting all areas of transport. In addition, the effects are generally not similar across geographies, time units or for different actors, which further emphasizes that the total effect is not easy to summarize.
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| 3. |
- Vaddadi, Bhavana, Ph.D. Student, et al.
(författare)
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Do they work? : Exploring possible potentials of neighbourhood Telecommuting centres in supporting sustainable travel
- 2022
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Ingår i: Travel Behaviour & Society. - : Elsevier BV. - 2214-367X .- 2214-3688. ; 29, s. 34-41
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Tidskriftsartikel (refereegranskat)abstract
- Digitally enabled neighbourhood telecommuting centres (NTCs) in residential areas may have the potential to reduce the environmental burdens of transport by shortening work trips and enabling modal shifts. This paper presents the results of a Living Lab where 67 participants were given access to an NTC. Through this Living Lab, this study identifies several conditions required for an NTC to substantially reduce commuting and overall have a positive impact on sustainable travel. The results indicate that while a small group of participants who lived very close to the NTC made significant lifestyle changes and adopted more sustainable travel practices, the overall changes in the sustainability aspects of travel for most participants were minimal. The majority of the participants merely exchanged a day spent working from home for a day at the NTC, as they were only allowed to be absent from the employer’s office one day per week. Further, some participants found it difficult to work remotely due to organisational roles and workplace norms. Another factor that limited the sustainability effect of the NTC was that most participants normally commuted by train, but in a few cases travelled to the NTC by car. With the arrival of the COVID-19 pandemic, most participants were required to work exclusively from home, which proved to have both positive and negative effects on the participants’ everyday lives and well-being. The participants reported a radical shift in attitudes towards remote working during this period, which they believed could lead to remote working becoming more common after the pandemic. In this case, NTCs could possibly play an important role in enabling this shift, by remedying some of the identified drawbacks of working from home. This could in turn enable a larger reduction in commuting. In areas where more people commute by car, sustainability effects would likely be greater.
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