How to estimate Italian parking data starting from German parking data? I am currently investigating the economic impact of the parking pain in Italy. I have just found out this INRIX Research which is absolutely stunning, but it only focuses on US, UK and Germany market.
I was wondering if there is any indicator/KPI to derive the Italian Parking Pain Cost starting from Germany's data.
You can find below a summary snapshot from the report:

Here you can find a direct link to the public report.
Do you know any indexes or KPIs to take in consideration? How would you solve this problem?
I'm not entirely sure this would be possible to do using German data, though very happy to be corrected.
It seems that the data you have is largely driven by parking search costs, therefore could you not try and find internationally comparable data on travel to work time, control for a few bits and then try and see whether you can find parking search costs as having a significant effect? Then you could just apply that effect to the data on italian travel to work time and make the assumption that's reasonable.
For data:
The Italian statistical authority (https://db.nomics.world/ISTAT) provide some brilliant survey data on citizens views on quality of life - perhaps there's something you could infer from there, or view whether data is offered on expenditure on parking enforecemnt. Similarly, the WEF's Travel and Tourism/Global competitiveness index may have indicators on travel to work time.
A very all out approach would be to collect data on council meeting minutes to see how often parking comes up as an issue.