The unprecedented 11 September 2001 terrorist attacks in the United States caused massive casualties and damage, and ushered in an era of greater uncertainty. While a prompt and vigorous policy response helped limit the immediate economic impact of the aggression, the heightened terrorist threat...

A new paradigm for transport economists has been established: revenues of a welfare-maximising road tax should be employed to reduce the level of a distortionary income tax. An essential modelling assumption to reach this conclusion is that the number of workdays is optimally chosen, whereas...

Germany’s manufacturing sector, which plays an important role for exports, has been performing well over the past decade in terms of labour productivity growth and international competitiveness. However, the services sector has had much slower growth rates. Competition often appears to be...

This paper analyzes the impact of the German autobahn net on the economic performance of German regions. To address endogeneity and reverse causation problems, we use historical instrument variables, i.e. a plan of the railroad net in 1890 and a plan of the autobahn net in 1937. We find a...

Spatial distribution and leakage effects are of great policy concern and increasingly discussed in the economics literature. Here we study Europe's most aggressive recent air pollution regulation: Low Emission Zones are areas in which vehicular access is allowed only to vehicles that emit low...

Germany intends to reach climate neutrality in 2045, tripling the speed of emission reductions that was achieved between 1990 and 2019. Soaring energy prices and the need to replace Russian energy imports have amplified the urgency to act. Various policy adjustments are needed to ensure...

This study analyses the economic effects of the EU's ‘Fit for 55’ climate mitigation policies using the OECD ENV-Linkage model, a dynamic, global Computable General Equilibrium model. The model projects macroeconomic, sectoral, energy and emission trends for the EU, and for the five largest...

This paper estimates the effects of temporary driver's license suspensions on driving behavior. A little known rule in the German traffic penalty catalogue maintains that drivers who commit a series of speeding transgressions within 365 days should have their license suspended for one month. My...