Greening the road ahead: The effect of policy announcements on green mobility behaviors

Last registered on January 30, 2023
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Pre-Trial

Trial Information

General Information

Title
Greening the road ahead: The effect of policy announcements on green mobility behaviors
RCT ID
AEARCTR-0010867
Initial registration date
January 25, 2023

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
January 30, 2023, 1:47 AM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

Country
Germany
Region

Primary Investigator

Name
Anja Köbrich León
Affiliation
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Janosch Schobin
PI Affiliation
University of Kassel
Contact Investigator

Additional Trial Information

Status
In development
Start date
2023-01-27
End date
2023-02-17
Keywords
Behavior, Environment & Energy
Additional Keywords
policy nouncemnt, DCE, sustainable transport policies
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In this paper, we shed light on the causal effects of policy announcements in terms of information on planned transport policy measures that render driving less attractive. We expect that providing information on changing transportation policies (making driving less attractive or more expensive) will trigger a (hypothetical) behavioral change in mode choice toward less motorized individual transportation options.
Furthermore, we examine whether the effects of the policy announcements depend on trust in political institutions and (governing) parties.
External Link(s)

Registration Citation

Citation
Köbrich León, Anja and Janosch Schobin. 2023. "Greening the road ahead: The effect of policy announcements on green mobility behaviors." AEA RCT Registry. January 30. https://doi.org/10.1257/rct.10867-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
To capture the extent to which policy announcements affect the willingness to change to a sustainable mode of transport, all participants will be randomly assigned to three treatment groups and one control group. The treatment groups receive information on planned transport policy measures.
Intervention Start Date
2023-01-27
Intervention End Date
2023-02-17

Primary Outcomes

Primary Outcomes (end points)
Willingness to change to sustainable mobility
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
To capture the extent to which policy announcements affect the willingness to change to a sustainable mode of transport, all participants will be randomly assigned to three treatment groups and one control group. The treatment groups receive information on planned transport policy measures.
Treatment 1: The following information may be helpful for your decision: The German government considers introducing a car toll on all roads.
Treatment 2: The following information may be helpful for your decision: The German government considers the implementation of general speed limits.
The control group will receive no information.

Experimental Design Details
Randomization Method
Participants of the inline survey are randomly assigned to the two treatment groups and the control group.
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
3000 individuals
Sample size: planned number of observations
3000 individuals
Sample size (or number of clusters) by treatment arms
1500 individuals per treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

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Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials