Cyclists’ expectations when encountering automated vehicles: results of an international photo-based questionnaire

A. Rodríguez Palmeiro; Sander van der Kint; M.P. Hagenzieker; J.C.F. de Winter

Cyclists’ expectations when encountering automated vehicles: results of an international photo-based questionnaire

A. Rodríguez Palmeiro, Sander van der Kint, M.P. Hagenzieker, J.C.F. de Winter

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

In the future, cyclists will be sharing the roads with automated and traditional vehicles [1]. Interactions between cyclists and automated vehicles (AVs) may differ from interactions with traditional vehicles, because cyclists may hold incorrect expectations about how AVs will react to their presence, leading to confusing and risky situations. The objective of this study was to assess the (self-reported) behaviour and expectations of cyclists when encountering an AV with different external features as compared to a traditional vehicle. This study builds on a smaller questionnaire conducted by Hagenzieker et al. [2]. 607 participants from 15 countries completed an online questionnaire, in which they were shown 12 photos from a cyclist's point of view. Each photo involved a traditional vehicle or an AV recognisable by a specific feature (door sign or roof sign with the message 'self-driving'). Moreover, three descriptions of the capabilities of AVs (negative, neutral, positive) were provided in a between-subjects design. Participants had to report, for each photo, (1) how sure they were that the car had noticed them, (2) how sure they were that the car would stop, both on a scale from unsure to sure, and (3) what they would do on a scale from 'increase speed' to 'wait'. Personal characteristics (trust in automation and sensation seeking) were also measured. The results showed that participants were more sure to be noticed by an AV with a door sign than by a traditional vehicle. They were also more sure that the car would stop when the vehicle was an AV. The type of AV description showed statistically significant interaction effects with vehicle type. Furthermore, results differed per country group. For example, European respondents were more sure to be noticed by the car than respondents from North America. Finally, trust and sensation seeking scores showed positive correlations with participants' answers to the three questions.

Original language	English
Title of host publication	Proceedings 7th International Cycling Safety Conference (ICSC 2018)
Number of pages	21
Publication status	Published - 2018
Event	ICSC 2018: 7th International Cycling Safety Conference - Barcelona, Spain Duration: 10 Oct 2018 → 11 Oct 2018 Conference number: 7

Conference

Conference	ICSC 2018: 7th International Cycling Safety Conference
Abbreviated title	ICSC 2018
Country/Territory	Spain
City	Barcelona
Period	10/10/18 → 11/10/18

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work publ

Keywords

cyclists
automated vehicles
intentions
expectations
road safety

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title = "Cyclists{\textquoteright} expectations when encountering automated vehicles: results of an international photo-based questionnaire",

abstract = "In the future, cyclists will be sharing the roads with automated and traditional vehicles [1]. Interactions between cyclists and automated vehicles (AVs) may differ from interactions with traditional vehicles, because cyclists may hold incorrect expectations about how AVs will react to their presence, leading to confusing and risky situations. The objective of this study was to assess the (self-reported) behaviour and expectations of cyclists when encountering an AV with different external features as compared to a traditional vehicle. This study builds on a smaller questionnaire conducted by Hagenzieker et al. [2]. 607 participants from 15 countries completed an online questionnaire, in which they were shown 12 photos from a cyclist's point of view. Each photo involved a traditional vehicle or an AV recognisable by a specific feature (door sign or roof sign with the message 'self-driving'). Moreover, three descriptions of the capabilities of AVs (negative, neutral, positive) were provided in a between-subjects design. Participants had to report, for each photo, (1) how sure they were that the car had noticed them, (2) how sure they were that the car would stop, both on a scale from unsure to sure, and (3) what they would do on a scale from 'increase speed' to 'wait'. Personal characteristics (trust in automation and sensation seeking) were also measured. The results showed that participants were more sure to be noticed by an AV with a door sign than by a traditional vehicle. They were also more sure that the car would stop when the vehicle was an AV. The type of AV description showed statistically significant interaction effects with vehicle type. Furthermore, results differed per country group. For example, European respondents were more sure to be noticed by the car than respondents from North America. Finally, trust and sensation seeking scores showed positive correlations with participants' answers to the three questions.",

keywords = "cyclists, automated vehicles, intentions, expectations, road safety",

author = "{Rodr{\'i}guez Palmeiro}, A. and {van der Kint}, Sander and M.P. Hagenzieker and {de Winter}, J.C.F.",

note = "Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work publ; ICSC 2018: 7th International Cycling Safety Conference, ICSC 2018 ; Conference date: 10-10-2018 Through 11-10-2018",

year = "2018",

language = "English",

booktitle = "Proceedings 7th International Cycling Safety Conference (ICSC 2018)",

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Cyclists’ expectations when encountering automated vehicles: results of an international photo-based questionnaire. / Rodríguez Palmeiro, A.; van der Kint, Sander; Hagenzieker, M.P. et al.
Proceedings 7th International Cycling Safety Conference (ICSC 2018). 2018.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Cyclists’ expectations when encountering automated vehicles

T2 - ICSC 2018: 7th International Cycling Safety Conference

AU - Rodríguez Palmeiro, A.

AU - van der Kint, Sander

AU - Hagenzieker, M.P.

AU - de Winter, J.C.F.

N1 - Conference code: 7

PY - 2018

Y1 - 2018

N2 - In the future, cyclists will be sharing the roads with automated and traditional vehicles [1]. Interactions between cyclists and automated vehicles (AVs) may differ from interactions with traditional vehicles, because cyclists may hold incorrect expectations about how AVs will react to their presence, leading to confusing and risky situations. The objective of this study was to assess the (self-reported) behaviour and expectations of cyclists when encountering an AV with different external features as compared to a traditional vehicle. This study builds on a smaller questionnaire conducted by Hagenzieker et al. [2]. 607 participants from 15 countries completed an online questionnaire, in which they were shown 12 photos from a cyclist's point of view. Each photo involved a traditional vehicle or an AV recognisable by a specific feature (door sign or roof sign with the message 'self-driving'). Moreover, three descriptions of the capabilities of AVs (negative, neutral, positive) were provided in a between-subjects design. Participants had to report, for each photo, (1) how sure they were that the car had noticed them, (2) how sure they were that the car would stop, both on a scale from unsure to sure, and (3) what they would do on a scale from 'increase speed' to 'wait'. Personal characteristics (trust in automation and sensation seeking) were also measured. The results showed that participants were more sure to be noticed by an AV with a door sign than by a traditional vehicle. They were also more sure that the car would stop when the vehicle was an AV. The type of AV description showed statistically significant interaction effects with vehicle type. Furthermore, results differed per country group. For example, European respondents were more sure to be noticed by the car than respondents from North America. Finally, trust and sensation seeking scores showed positive correlations with participants' answers to the three questions.

AB - In the future, cyclists will be sharing the roads with automated and traditional vehicles [1]. Interactions between cyclists and automated vehicles (AVs) may differ from interactions with traditional vehicles, because cyclists may hold incorrect expectations about how AVs will react to their presence, leading to confusing and risky situations. The objective of this study was to assess the (self-reported) behaviour and expectations of cyclists when encountering an AV with different external features as compared to a traditional vehicle. This study builds on a smaller questionnaire conducted by Hagenzieker et al. [2]. 607 participants from 15 countries completed an online questionnaire, in which they were shown 12 photos from a cyclist's point of view. Each photo involved a traditional vehicle or an AV recognisable by a specific feature (door sign or roof sign with the message 'self-driving'). Moreover, three descriptions of the capabilities of AVs (negative, neutral, positive) were provided in a between-subjects design. Participants had to report, for each photo, (1) how sure they were that the car had noticed them, (2) how sure they were that the car would stop, both on a scale from unsure to sure, and (3) what they would do on a scale from 'increase speed' to 'wait'. Personal characteristics (trust in automation and sensation seeking) were also measured. The results showed that participants were more sure to be noticed by an AV with a door sign than by a traditional vehicle. They were also more sure that the car would stop when the vehicle was an AV. The type of AV description showed statistically significant interaction effects with vehicle type. Furthermore, results differed per country group. For example, European respondents were more sure to be noticed by the car than respondents from North America. Finally, trust and sensation seeking scores showed positive correlations with participants' answers to the three questions.

KW - cyclists

KW - automated vehicles

KW - intentions

KW - expectations

KW - road safety

M3 - Conference contribution

BT - Proceedings 7th International Cycling Safety Conference (ICSC 2018)

Y2 - 10 October 2018 through 11 October 2018

ER -

Cyclists’ expectations when encountering automated vehicles: results of an international photo-based questionnaire

Abstract

Conference

Bibliographical note

Keywords

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