impressive productivity gains. But it is easy to confuse true productivity advances in transportation industries with changes in … productivity can be overwhelmed by even subtle changes in the traffic mix. After controlling for endogenous changes in the … data, 1982-1997, with observed productivity changes much more likely due to changes in speed limits and the dimensions of …

US labor productivity in ICT-skill intensive industries experienced tremendous increases in post-1995 trend growth … the source of industry productivity growth in German ICT-skill intensive sectors, there is no empirical evidence on the … influence of ICT-skill complementarities; rather was productivity growth of German Motor Vehicles & Other Transports driven by …