The detection of dangerous road sites is usually performed using empirical methods which focus on observed accident frequencies and/or proportions of accidents with a given feature. The most widely used detection tools have an empirical Bayes (EB) background. The EB approaches rely on the...

In the evaluation of transportation infrastructure projects, some non-tradable goods such as time are usually key determinants of the result. However, obtaining monetary values for these goods is not always easy. This paper introduces a novel approach based on the combination of bayesian...

We modify a method recently suggested by Martin Weitzman (2012) for determining a risk-adjusted social discount rate (SDR) term structure consistent with both the (augmented) Ramsey rule and the consumption-based CAPM. Using this approach we estimate SDR for transportation infrastructure...

This discussion paper resulted in a publication in <I>Transportation Research Part B: Methodological</I> (2011). Vol. 45(10), pages 1545-1559.<P> This paper analyses the cost of access travel time variability for air travelers. Reliable access to airports is important since it is likely that the cost of...</p></i>

Este trabajo presenta la evaluación financiera y económica del "Sistema Estratégico de Transporte Público de Pasajeros para la Ciudad de Pasto - SETP". Se desarrollo una metodología para la conceptualización y estimación de los beneficios y costos. Como resultado se destaca que el...

Transport infrastructure contributes to social welfare when a basic condition is fulfilled: social benefits should exceed social costs. It has been common to see infrastructure with a biased perspective leading to the belief that the more, the bigger and the more advance technologically the...

This paper investigates how corrupt public officials and private agents adjust to policy reforms that change opportunities for bribery deals to take place. I exploit an exogenously determined tariff liberalization program that altered opportunities to extract bribes through a particular method...

This paper investigates how corrupt public officials and firms adjust to policy reforms that change opportunities for bribery deals to take place. I take advantage of an exogenously determined tariff liberalization program that altered opportunities to extract bribes through a particular method...

Many analysts have argued that energy efficiency investments offer an enormous "win-win" opportunity to both reduce negative externalities and save money. This overview paper presents a simple model of investment in energy-using capital stock with two types of market failures: first,...

This paper analyses the cost of access travel time variability for air travelers. Reliable access to airports is important since it is likely that the cost of missing a flight is high. First, the determinants of the preferred arrival times at airports are analyzed, including trip purpose, type...