Public transportation is an activity facing various problems. One of them, very complex and dangerous, is terrorism which together with criminal activities and vandalism, is making the top of the threats affecting public transportation and therefore urban life quality. Public transportation has...

This paper studies the second-best problem where not all links of acongested transportation network can be tolled. The second-best taxrule for this problem is derived for general static networks, so thatthe solution presented is valid for any graph of the network, and forany set of tolling...

We explore the properties of various types of public and private pricing on acongested road network with heterogeneous users and allowing for elasticdemand. Heterogeneity is represented by a continuum of values of time. Thenetwork consists of both serial and parallel links, which allows us to...

This paper considers the second-best problem where not all links of a congested transportation networkcan be tolled. The paper builds on earlier work, in which the second-best tax rule for this problem wasderived for general static networks, so that the solution presented is valid for any graph...

The COVID-19 crisis has identified several weaknesses and shortcomings of global supply chain networks. Due to the rapidly increasing demand of protective healthcare equipment, i.e. goggles, masks or equipment, it is visible that global supply chains have been significantly challenged....