  In spring 2022, the German federal government agreed on a set of measures
that aim at reducing households' financial burden resulting from a recent price
increase, especially in energy and mobility. These measures include among
others, a nation-wide public transport ticket for 9 EUR per month and a fuel
tax cut that reduces fuel prices by more than 15%. In transportation research
this is an almost unprecedented behavioral experiment. It allows to study not
only behavioral responses in mode choice and induced demand but also to assess
the effectiveness of transport policy instruments. We observe this natural
experiment with a three-wave survey and an app-based travel diary on a sample
of hundreds of participants as well as an analysis of traffic counts. In this
second report, we update the information on study participation, provide first
insights on the smartphone app usage as well as insights on the first wave
results, particularly on the 9 EUR-ticket purchase intention.
