RAAV

Rural Acessibility & Automated Vehicles

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Rural dwellers often experience poor accessibility. This applies especially to groups like elderly and pupils who mostly depend on public transport, or to the adult members of large-size households who have stronger space-time constraints. Automated vehicles (AVs) may greatly change this condition. Thanks to the cost savings they are supposed to generate, AVs could increase the competitiveness of traditional public transport or enable the introduction of alternative demand-responsive services. In their turn, these service improvements could affect the accessibility of different population groups and of rural communities as a whole.

Autonomous shared shuttles in a rural context (generated with AI).Credit: created with AI | All rights reserved

PROJECT GOAL AND STRUCTURE

The RAAV project studies the accessibility impacts of AVs in rural areas, by developing a set of transport supply scenarios and by estimating their impacts on the space-time accessibility of various population groups typically living accessibility issues in the rural context.

Four research questions are addressed:

  • Which AV-based supply scenarios could be introduced in rural study areas?
  • How could such scenarios change the individual accessibility of different population groups?
  • How could they change the collective accessibility of rural population as a whole?
  • Based on results, which AV drivers improve accessibility and which policies may foster them?

To answer these research questions, an eight-step work plan is followed:

altCredit: Eurac Research
The eight-step work plan of the RAAV project.

STEP 1: CONCEPTUAL & METHODOLOGICAL FRAMEWORK

The conceptual framework has been sharpened by summarizing the potential impacts of AVs on accessibility (and accessibility differences across society) based on a literature review conducted by the authors. The methodological framework has focused on the space-time accessibility models and on their adjustments to the specific project purpose. Specifically, the access to fixed activities has been integrated with the access to discretionary opportunities in the definition of a variant of the traditional space-time model.

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Space-time model for individual accessibility analysis.Credit: Eurac Research

Testing of the space-time model with five fictional individuals.Credit: Eurac Research

SEE RELATED PUBLICATIONS, PRESENTATIONS AND DATASETS:

Scientific article: Dianin, A., Ravazzoli, E., Hauger, G., 2021. Implications of Autonomous Vehicles for Accessibility and Transport Equity: A Framework Based on Literature. Sustainability 13, 4448. https://doi.org/10.3390/su13084448

Scientific article: Dianin, A., Gidam, M., Hauger, G., 2022. Isolating the Role of the Transport System in Individual Accessibility Differences: A Space-Time Transport Performance Measure. Applied Sciences 12, 3309. https://doi.org/10.3390/app12073309

• Presentation: Dianin, A. 2022. RAAV: Rural Accessibility & Automated Vehicles. VisionAlps Forum - Bolzano (Bolzano, 03/11/2022 - 03/11/2022). https://hdl.handle.net/10863/27489

STEP 2: IDENTIFICATION OF RURAL STUDY AREAS

Two rural and remote study areas have been chosen to develop AV-based supply scenarios and analyze their potential impacts on accessibility. These are the municipalities of Mühlwald (in South Tyrol) and Sooß (in Lower Austria). They have been selected based on their small size (less than 1,500 inhabitants) lack of in-situ services and opportunities, limited availability of public transport services, and presence of relevant socio-demographic groups like large households, women, elderly and minors. A travel-diary survey has been conducted on telephone with the citizenship of both municipalities in autumn 2022 (involving over 220 participants in total). This has allowed collecting data on the current space, time and transport constraints of a sample of residents, which is the basis for the calculation of space-time accessibility at the individual level. Anonymized survey data are available for consultation.

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Commuting flows and public transport supply in Mühlwald and surroundings.Credit: Eurac Research

Mühlwald Dorf.Credit: Alberto Dianin | All rights reserved

The bus stop of Mühlwald Dorf.Credit: Alberto Dianin | All rights reserved

SEE RELATED PUBLICATIONS, PRESENTATIONS AND DATASETS:

• Article/report: Chizzali, C., Dianin, A., 2023. Gibt es Unterschiede in der Mobilität bei Männern und Frauen? Eurac Research Science Blogs. https://shorturl.at/acfp8

• Presentation: Dianin, A., Chizzali. C., 2022. RAAV: Rural Accessibility & Automated Vehicles - Mobilitätsumfrage der Gemeinde Mühlwald (Mühlwald, 11/10/2022). https://hdl.handle.net/10863/36679

• Dataset: Gidam, M., Dianin, A., Hauger, G., Ravazzoli, E., 2023. Collected data from mobility diaries from people surveyed in the RAAV project. (1.0.0) [Data set]. TU Wien. https://doi.org/10.48436/hq7b7-xsa12

STEP 3: SETUP OF AV-BASED SUPPLY SCENARIOS

The AV-based supply scenarios have been designed following a two-step process. In the first step, the project team has developed a set of conceptual use cases derived from the scientific literature regarding the usage of AVs in the rural domain. These use cases have reflected on the recurrent schemes and their key characteristics. These have been presented at the CORP Conference 2022 in Vienna. In the second step, the conceptual schemes have been transformed into concrete supply scenarios for the study areas. For this purpose, the team has set a design methodology based on the intertwined estimation of the transport performances, agency cost and service capacity of the scenarios. Each scenario has been designed according to a key logic: the cost saving generated by transport automation are reinvested to improve the transport performances as much as possible, while considering the today´s operating cost budget, public transport demand and service capacity as fixed. Five scenarios have been developed and quantified for the two study areas.

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Conceptual use cases for AVs in rural public transport.Credit: Alberto Dianin - Eurac Research

AV-based scenarios in Mühlwald - diagrams.Credit: Alberto Dianin - Eurac Research

AV-based scenarios in Mühlwald - maps.Credit: Alberto Dianin - Eurac Research

SEE RELATED PUBLICATIONS, PRESENTATIONS AND DATASETS:

• Scientific article: Dianin, A., Gidam, M., Ravazzoli, E., Hauger, G., 2022. Automation of Rural Collective Transport: Conceptualising three Alternative Use Cases based on Underexplored Rural Transport Specificities. Proceedings of REAL CORP 2022, 27th International Conference on Urban Development, Regional Planning and Information Society 111-120. https://doi.org/10.48494/REALCORP2022.5014

• Scientific article: Dianin, A., Gidam, M., Hauger, G., 2023. What can be done with today’s budget and demand? Scenarios of rural public transport automation in Mühlwald (South Tyrol). Public Transp. https://doi.org/10.1007/s12469-023-00333-8

• Article/report: Dianin, A., Ravazzoli, E., 2023. Come migliorare il trasporto pubblico delle aree rurali nel futuro con lo stesso budget di oggi? Eurac Research Science Blogs. https://rb.gy/6u95jd

• Article/report: Dianin, A., Blandino, G., 2024. Bus senza conducente in valle? SALTO. https://salto.bz/de/article/30012024/bus-senza-conducente-valle

• Article/report: Caobelli, C., 2024. Alto Adige: collegare le aree rurali con veicoli autonomi: il progetto RAAV per una mobilità più accessibile. Alto Adige Innovazione. https://www.altoadigeinnovazione.it/trasporti-rurali-raav/

• Dataset: Gidam, M., Dianin, A., Hauger, G., Ravazzoli, E., 2023. Quantitative analysis of transport performance and agency costs for five scenarios of the implementation of automated vehicles in public transport. [Data set]. TU Wien. https://doi.org/10.48436/h0mwh-grx90

STEP 4: CURRENT ACCESSIBILITY ANALYSIS

Based on the inputs provided in the methodological framework, the traditional model for space-time accessibility has been adjusted to meet the project requirements. This has led to the definition of a so-called public-transport space-time accessibility model (PT-STA model). This model calculates two core output indicators at the individual level: 1) the accessibility by public transport to the set of daily fixed activities (STA-fix); and 2) the accessibility by public transport to the set of daily reachable discretionary opportunities (STA-dis). The model has been tested in the study areas of Mühlwald and Sooß, so estimating the today´s accessibility by public transport of a sample of inhabitants. This status-quo accessibility estimation has been used as reference for the following calculation of the impacts of public transport automation (see the AV scenarios developed at the STEP 3) in the two study areas.

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The key steps of the PT-STA model developed in the RAAV projectCredit: Alberto Dianin | All rights reserved

Exemplificative PT-STA results for one sample member in Mühlwald

Summary of the PT-STA model results at the status quo in MühlwaldCredit: ADianin | All rights reserved

SEE RELATED PUBLICATIONS, PRESENTATIONS AND DATASETS:

Scientific article: Dianin, A., Gidam, M., Hauger, G., Ravazzoli, E., 2024. Measuring public transport accessibility to fixed activities and discretionary opportunities: a space–time approach. European Transport Research Review 16, 9. https://doi.org/10.1186/s12544-024-00636-2

Dataset: Gidam, M., Dianin, A., Hauger, G., Ravazzoli, E., 2023. RAAV - Results of the PT-STA accessibility analysis (1.0.0) [Data set]. TU Wien. https://doi.org/10.48436/k1ce7-hrt53

STEP 5: INDIVIDUAL ACCESSIBILITY IMPACTS

The PT-STA model obtained at the STEP 4 has been applied to the AV scenarios developed in the STEP 3. This has allowed calculating the potential accessibility impacts of public transport automation in the two study areas of Mühlwald and Sooß. The impacts (STA-fix and STA-dis) have been first calculated at the individual level for all the sample members involved in the two study areas.

The individual impacts have been then aggregated for the whole sample, as well as for six population subgroups that tend to live stronger accessibility issues according to the literature. These subgroups comprise: a) people with no access to private car; b) people living in very remote locations; c) minors and seniors; d) women; e) members of large-size households; f) full-time workers. These subgroups tend to have stronger space, time and transport constraints due to their low access to private transport, remote home location, or typically tight daily schedule. Results show that the AV scenarios with a stronger integration of demand-responsive services tend to provider the sharpest accessibility benefits in general, and to the mentioned subgroups in particular.

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Exemplificative accessibility impacts of the AV scenarios on one sample member in Mühlwald

Impacts of the AV scenarios on accessibility for the whole sampleCredit: ADianin | All rights reserved

Synthetic comparison of the BAU and AV scenarios over the sample and subgroupsCredit: ADianin | All rights reserved

SEE RELATED PUBLICATIONS, PRESENTATIONS AND DATASETS:

Scientific article: Dianin, A., Gidam, M., Ravazzoli, E., Stawinoga, A.E., Hauger, G., 2024. Individual accessibility impacts of public transport automation on (groups of) rural dwellers. Journal of Public Transportation 26, 100098. https://doi.org/10.1016/j.jpubtr.2024.100098

Dataset: Gidam, M., Dianin, A., Hauger, G., Ravazzoli, E., 2023. RAAV - Results of the PT-STA accessibility analysis for five public transport scenarios based on automated vehicles in Mühlwald, South Tyrol (1.0.0) [Data set]. TU Wien. https://doi.org/10.48436/4592q-bq206

Publications
Measuring public transport accessibility to fixed activities and discretionary opportunities: a space–time approach
Dianin A, Gidam M, Hauger G, Ravazzoli E (2024)
Journal article
European Transport Research Review

More information: https://doi.org/10.1186/s12544-024-00636-2

https://doi.org/10.1186/s12544-024-00636-2

Individual accessibility impacts of public transport automation on (groups of) rural dwellers
Dianin A, Gidam M, Ravazzoli E, Stawinoga AE, Hauger G (2024)
Journal article
Journal of Public Transportation

More information: https://www.sciencedirect.com/science/article/pii/S1077291X2 ...

https://doi.org/10.1016/j.jpubtr.2024.100098

The mobility of care in rural areas: an exploratory mixed-methods approach in South Tyrol (Italy)
Chizzali C (2024)
Presentation/Speech

Conference: Spring School Researching Care and Care Policy in Europe| challenges for care resilience in turbulent times | Milan : 5.6.2024 - 7.6.2024

Collective transport automation in rural areas: Policy recommendations emerged from the RAAV project
Dianin A, Fian T, Hauger G (2024)
Presentation/Speech

Conference: 26th Euro Working Group on Transportation Meeting (EWGT 2024) | Lund | 4.9.2024 - 6.9.2024

Quantitative analysis of transport performance and agency costs for five scenarios of the implementation of automated vehicles in public transport. (1.0.0) [Data set].
Gidam M, Dianin A, Hauger G, Ravazzoli E (2023)
Database

More information: https://doi.org/10.48436/h0mwh-grx90

https://doi.org/10.48436/h0mwh-grx90

Collected data from mobility diaries from people surveyed in the RAAV project. (1.0.0) [Data set]
Gidam M, Dianin A, Hauger G, Ravazzoli E (2023)
Database

More information: https://doi.org/10.48436/hq7b7-xsa12

https://doi.org/10.48436/hq7b7-xsa12

Come migliorare il trasporto pubblico delle aree rurali nel futuro con lo stesso budget di oggi?
Dianin A, Ravazzoli E (2023)
Internet

More information: https://www.eurac.edu/it/blogs/regionalstories/come-migliora ...

https://doi.org/10.57708/BZQTOCY37S5A_OA4MF0IOGG

Gibt es Unterschiede in der Mobilität bei Männern und Frauen?
Chizzali C, Dianin A (2023)
Internet

More information: https://www.eurac.edu/de/blogs/regionalstories/gibt-es-unter ...

https://doi.org/10.57708/BEWS6UF_8TYKL7VLMJC374A

What can be done with today’s budget and demand? Scenarios of rural public transport automation in Mühlwald (South Tyrol)
Dianin A, Gidam M, Hauger G (2023)
Journal article
Public Transport

More information: https://doi.org/10.1007/s12469-023-00333-8

https://doi.org/10.1007/s12469-023-00333-8

Automation of Rural Collective Transport: Conceptualising three Alternative Use Cases based on Underexplored Rural Transport Specificities
Dianin A, Gidam M, Ravazzoli E, Hauger G (2022)
Conference proceedings article

Conference: REAL CORP 2022, 27th International Conference on Urban Development, Regional Planning and Information Society | Vienna | 14.11.2022 - 16.11.2022

More information: https://doi.org/10.48494/REALCORP2022.5014

https://doi.org/10.48494/REALCORP2022.5014

RAAV: Rural Accessibility & Automated Vehicles
Dianin A (2022)
Presentation/Speech

Conference: VisionAlps Forum - Bolzano | Bolzano | 3.11.2022 - 3.11.2022

More information: https://www.visionalps.com/bolzano-forum/

Isolating the Role of the Transport System in Individual Accessibility Differences: A Space-Time Transport Performance Measure
Dianin A, Gidam M, Hauger G (2022)
Journal article
Applied Sciences

More information: https://doi.org/10.3390/app12073309

https://doi.org/10.3390/app12073309

https://hdl.handle.net/10863/23384

Automation of Rural Collective Transport: Conceptualising three Alternative Use Cases based on Underexplored Rural Transport Specificities
Dianin A, Gidam M, Ravazzoli E, Hauger G (2022)
Presentation/Speech

Conference: REAL CORP 2022, 27th International Conference on Urban Development, Regional Planning and Information Society | Vienna | 14.11.2022 - 16.11.2022

More information: https://www.eurac.edu/en/institutes-centers/institute-for-re ...

RAAV: Rural Accessibility & Automated Vehicles - Mobilitätsumfrage der Gemeinde Mühlwald
Dianin A, Chizzali C (2022)
Presentation/Speech

Conference: RAAV meeting with the Mühlwald citizenship | Mühlwald | 11.10.2022 - 11.10.2022

More information: https://www.eurac.edu/en/institutes-centers/institute-for-re ...

Implications of Autonomous Vehicles for Accessibility and Transport Equity: A Framework Based on Literature
Dianin A, Ravazzoli E, Hauger G (2021)
Journal article
Sustainability

More information: https://www.mdpi.com/2071-1050/13/8/4448

https://doi.org/10.3390/su13084448

https://hdl.handle.net/10863/16881

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