Question A:
Capping the number of ride-sharing drivers as is being discussed in New York City, Chicago and London will make the average resident in that city worse off.
Responses
© 2025. Kent A. Clark Center for Global Markets.
26%
8%
2%
6%
16%
34%
8%
Responses weighted by each expert's confidence
© 2025. Kent A. Clark Center for Global Markets.
2%
9%
19%
53%
16%
Question B:
To achieve a given level of congestion, it would be better to use taxes for driving that vary based on the level of congestion, rather than limiting the number of ride-sharing vehicles.
Responses
© 2025. Kent A. Clark Center for Global Markets.
26%
4%
2%
2%
2%
32%
32%
Responses weighted by each expert's confidence
© 2025. Kent A. Clark Center for Global Markets.
3%
2%
1%
45%
49%
Question A Participant Responses
Participant |
University |
Vote |
Confidence |
Bio/Vote History |
|---|---|---|---|---|
 Franklin Allen |
Imperial College London | Bio/Vote History | ||
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Complicated issue with many factors involved including price, convenience, availability, safety, and so forth,
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 Pol Antras |
Harvard | Bio/Vote History | ||
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 Agnès Bénassy-Quéré |
Paris School of Economics | Bio/Vote History | ||
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 Timothy J. Besley |
LSE | Did Not Answer | Bio/Vote History | |
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 Olivier Blanchard |
Peterson Institute | Bio/Vote History | ||
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This seems like a standard demand supply ec10 exercise, with no unusual features
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 Nicholas Bloom |
Stanford | Bio/Vote History | ||
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 Richard William Blundell |
University College London | Bio/Vote History | ||
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 Elena Carletti |
Bocconi | Bio/Vote History | ||
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 Jean-Pierre Danthine |
Paris School of Economics | Bio/Vote History | ||
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At the expense however of all incumbents taxi drivers for whom compensatory measures of a transitory nature could be justified.
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 Paul De Grauwe |
LSE | Did Not Answer | Bio/Vote History | |
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 Jan Eeckhout |
UPF Barcelona | Bio/Vote History | ||
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 Ernst Fehr |
Universität Zurich | Bio/Vote History | ||
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Reduction in service supply will hurt the consumer because of higher prices and perhaps longer waiting times until service delivery
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 Xavier Freixas |
Barcelona GSE | Did Not Answer | Bio/Vote History | |
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 Nicola Fuchs-Schündeln |
Goethe-Universität Frankfurt | Bio/Vote History | ||
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 Jordi Galí |
Barcelona GSE | Bio/Vote History | ||
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 Luis Garicano |
LSE | Did Not Answer | Bio/Vote History | |
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 Francesco Giavazzi |
Bocconi | Bio/Vote History | ||
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 Rachel Griffith |
University of Manchester | Bio/Vote History | ||
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 Veronica Guerrieri |
Chicago Booth | Bio/Vote History | ||
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 Luigi Guiso |
Einaudi Institute for Economics and Finance | Did Not Answer | Bio/Vote History | |
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 Patrick Honohan |
Trinity College Dublin | Bio/Vote History | ||
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Depends a lot on how tight. Incumbent lobbying could make it too tight. There are better measures for reducing traffic congestion.
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 Beata Javorcik |
University of Oxford | Bio/Vote History | ||
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 Henrik Kleven |
Princeton | Did Not Answer | Bio/Vote History | |
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 Botond Kőszegi |
Central European University | Did Not Answer | Bio/Vote History | |
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 Jan Pieter Krahnen |
Goethe University Frankfurt | Bio/Vote History | ||
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Too many side and cross effects to consider in order to arrive at a "safe" welfare conclusion.
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 Per Krusell |
Stockholm University | Bio/Vote History | ||
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I am not an expert on this!
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 Eliana La Ferrara |
Harvard Kennedy | Did Not Answer | Bio/Vote History | |
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 Christian Leuz |
Chicago Booth | Bio/Vote History | ||
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Consumers benefit from lower prices due to ride sharing competition, but drivers' income and congestion are offsetting considerations
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 Thierry Mayer |
Sciences-Po | Bio/Vote History | ||
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 Costas Meghir |
Yale | Bio/Vote History | ||
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 Peter Neary |
Oxford | Bio/Vote History | ||
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Restricting quantity will raise prices and lower average welfare. Effects on congestion unlikely to be significant
|
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 Kevin O'Rourke |
Oxford | Bio/Vote History | ||
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 Marco Pagano |
Università di Napoli Federico II | Bio/Vote History | ||
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 Lubos Pastor |
Chicago Booth | Bio/Vote History | ||
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 Torsten Persson |
Stockholm University | Bio/Vote History | ||
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 Christopher Pissarides |
London School of Economics and Political Science | Did Not Answer | Bio/Vote History | |
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 Richard Portes |
London Business School | Did Not Answer | Bio/Vote History | |
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 Canice Prendergast |
Chicago Booth | Bio/Vote History | ||
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 Lucrezia Reichlin |
London Business School | Bio/Vote History | ||
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 Rafael Repullo |
CEMFI | Bio/Vote History | ||
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 Hélène Rey |
London Business School | Did Not Answer | Bio/Vote History | |
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 Antoinette Schoar |
MIT | Bio/Vote History | ||
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taxes are better than quotas. Caveat: if congestion affects all, but rides are used by fully priceinelastic people,taxes don't solve problem
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 Daniel Sturm |
London School of Economics | Bio/Vote History | ||
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Ride-sharing improves residents transport options, with better transport being key for successful urban areas.
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 John Van Reenen |
LSE | Bio/Vote History | ||
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 John Vickers |
Oxford | Bio/Vote History | ||
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 Hans-Joachim Voth |
University of Zurich | Bio/Vote History | ||
|
In principle, regulatory arbitrage is not ideal; but taxi regulation is so hopeless in most cities that Uber et can only make things better
|
||||
 Beatrice Weder di Mauro |
The Graduate Institute, Geneva | Did Not Answer | Bio/Vote History | |
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 Karl Whelan |
University College Dublin | Bio/Vote History | ||
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Arbitrary caps on numbers employed in specific industries are unlikely to ever deliver good outcomes.
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 Charles Wyplosz |
The Graduate Institute Geneva | Bio/Vote History | ||
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Some (those who don't use ride-sharing will benefit, others will lose.
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 Fabrizio Zilibotti |
Yale University | Did Not Answer | Bio/Vote History | |
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Question B Participant Responses
Participant |
University |
Vote |
Confidence |
Bio/Vote History |
|---|---|---|---|---|
|
Franklin Allen |
Imperial College London | Bio/Vote History | ||
|
Taxing road use is is good way of dealing with congestion. Main downside is income distribution so could use revenues for public transport.
|
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Pol Antras |
Harvard | Bio/Vote History | ||
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Agnès Bénassy-Quéré |
Paris School of Economics | Bio/Vote History | ||
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Timothy J. Besley |
LSE | Did Not Answer | Bio/Vote History | |
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Olivier Blanchard |
Peterson Institute | Bio/Vote History | ||
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Nicholas Bloom |
Stanford | Bio/Vote History | ||
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Richard William Blundell |
University College London | Bio/Vote History | ||
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||||
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Elena Carletti |
Bocconi | Bio/Vote History | ||
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||||
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Jean-Pierre Danthine |
Paris School of Economics | Bio/Vote History | ||
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||||
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Paul De Grauwe |
LSE | Did Not Answer | Bio/Vote History | |
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||||
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Jan Eeckhout |
UPF Barcelona | Bio/Vote History | ||
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||||
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Ernst Fehr |
Universität Zurich | Bio/Vote History | ||
|
price mechanism is just a much more efficient mechanism to solve externality problems
|
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Xavier Freixas |
Barcelona GSE | Did Not Answer | Bio/Vote History | |
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|
||||
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Nicola Fuchs-Schündeln |
Goethe-Universität Frankfurt | Bio/Vote History | ||
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||||
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Jordi Galí |
Barcelona GSE | Bio/Vote History | ||
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Luis Garicano |
LSE | Did Not Answer | Bio/Vote History | |
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Francesco Giavazzi |
Bocconi | Bio/Vote History | ||
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|
||||
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Rachel Griffith |
University of Manchester | Bio/Vote History | ||
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|
||||
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Veronica Guerrieri |
Chicago Booth | Bio/Vote History | ||
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|
||||
|
Luigi Guiso |
Einaudi Institute for Economics and Finance | Did Not Answer | Bio/Vote History | |
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|
||||
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Patrick Honohan |
Trinity College Dublin | Bio/Vote History | ||
|
This is the 21st century after all.
|
||||
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Beata Javorcik |
University of Oxford | Bio/Vote History | ||
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|
||||
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Henrik Kleven |
Princeton | Did Not Answer | Bio/Vote History | |
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|
||||
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Botond Kőszegi |
Central European University | Did Not Answer | Bio/Vote History | |
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||||
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Jan Pieter Krahnen |
Goethe University Frankfurt | Bio/Vote History | ||
|
The marginal cost of adding or subtracting vehicles instantly, according to traffic status, is lower with ride-sharers than with cabs.
|
||||
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Per Krusell |
Stockholm University | Bio/Vote History | ||
|
I’m using basic micro theory; not evidence.
|
||||
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Eliana La Ferrara |
Harvard Kennedy | Did Not Answer | Bio/Vote History | |
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Christian Leuz |
Chicago Booth | Bio/Vote History | ||
|
Tax finer instrument but should apply to all cars; w/ cap drivers stay longer on road. Cong pricing more efficient but distributional effect
|
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Thierry Mayer |
Sciences-Po | Bio/Vote History | ||
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||||
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Costas Meghir |
Yale | Bio/Vote History | ||
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||||
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Peter Neary |
Oxford | Bio/Vote History | ||
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Singapore pioneered road pricing decades ago. Sad that it has not been more widely copied. Scarce resources given away freely makes no sense
|
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Kevin O'Rourke |
Oxford | Bio/Vote History | ||
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|
||||
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Marco Pagano |
Università di Napoli Federico II | Bio/Vote History | ||
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|
||||
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Lubos Pastor |
Chicago Booth | Bio/Vote History | ||
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|
||||
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Torsten Persson |
Stockholm University | Bio/Vote History | ||
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|
||||
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Christopher Pissarides |
London School of Economics and Political Science | Did Not Answer | Bio/Vote History | |
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||||
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Richard Portes |
London Business School | Did Not Answer | Bio/Vote History | |
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||||
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Canice Prendergast |
Chicago Booth | Bio/Vote History | ||
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|
||||
|
Lucrezia Reichlin |
London Business School | Bio/Vote History | ||
|
|
||||
|
Rafael Repullo |
CEMFI | Bio/Vote History | ||
|
|
||||
|
Hélène Rey |
London Business School | Did Not Answer | Bio/Vote History | |
|
|
||||
|
Antoinette Schoar |
MIT | Bio/Vote History | ||
|
see prior comment. also, need to take into account if taxes can be reasonably enforced.
|
||||
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Daniel Sturm |
London School of Economics | Bio/Vote History | ||
|
Selectively reducing one type of car traffic has no long-run effect on congestion, which can only be reduced with congestion charging.
|
||||
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John Van Reenen |
LSE | Bio/Vote History | ||
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|
||||
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John Vickers |
Oxford | Bio/Vote History | ||
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|
||||
|
Hans-Joachim Voth |
University of Zurich | Bio/Vote History | ||
|
A good part of congestion is caused by searching for a parking space; ride sharing reduces that, balancing shifts away from public trans.
|
||||
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Beatrice Weder di Mauro |
The Graduate Institute, Geneva | Did Not Answer | Bio/Vote History | |
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|
||||
|
Karl Whelan |
University College Dublin | Bio/Vote History | ||
|
Capping numbers of a specific group of drivers is not an efficient or useful way to deal with congestion.
|
||||
|
Charles Wyplosz |
The Graduate Institute Geneva | Bio/Vote History | ||
|
Can it be done well?
|
||||
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Fabrizio Zilibotti |
Yale University | Did Not Answer | Bio/Vote History | |
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