Shoup — Istanbul weighs in


Shoup — Istanbul weighs in

Got this from Turkey:

Dear John,

I have just seen your blog piece “The SHOUP Controversy – Are 30% of the cars in a given neighborhood looking for parking?” It is possible to “estimate” how many cars are induced to cruise for parking in response to one more car parking at a parking location. One does not need expensive surveys or measurements; administrative parking data is sufficient to estimate this. We explain the methodology in the following paper.

For example, in our application of our methodology to a parking location in Istanbul, we find that a marginal car parking at the location results in on average 3.6 cars to cruise for parking in the next hour. The external costs created by this is substantial and is in the same order with the external costs of traffic congestion. I cannot cite any recent statistics on the percentage of cars cruising for parking in traffic, but I agree with Shoup that external costs created by cruising is as important as those created by traffic congestion while dealing with them (with policy) is relatively easier.

The paper in the above link is a former version. We have a revised draft, which I can share with you if you want.

All the best,


Eren Inci
Associate Professor of Economics
Sabanci University
Faculty of Arts and Social Sciences
34956 Istanbul TURKEY


We have a very long reach, sports fans.


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