This paper estimates the non-linear impact of ICT network on motorway contribution to total factor productivity. Using dynamic panel data of OECD member countries, the paper finds that there exists a critical mass of broadband penetration rate which has the property that if this threshold level...

The road safety literature is typified by a high degree of compartmentalization between studies that focus on infrastructure and traffic conditions and those devoted to the evaluation of public policies and regulations. As a result, few studies adopt a unified empirical framework in their...

Public procurement of infrastructure has been subject to a long standing debate concerning the procurements' qualification requirements. Basically, it remains unclear what determines public procurement officers to vary procurements' qualification requirements. This research serves to elaborate...

Road improvements lead to benefits in the form of e.g. reduced travelling time, improved traffic safety and reduced emissions. These improvements do not only benefit the actual road users, but they are also "spreading" into the local community or neighbouring communities through several types of...

The paper continues the ongoing discussion about the concept of accessibility and its applicability to infrastructural appraisal. David Metz states that travel time savings disappear in a long term perspective and to empirically untested "constant travel time budget" literature. Metz therefore...