In transit systems there is a critical trade-off between the level of service and operating costs. At the planning level, for a given network design, this trade-off is captured by the timetabling (TT) and vehicle scheduling (VS) problems. In the TT problem we try to maximize the number of...

Bus bunching affects transit operations by increasing passenger waiting times and its variability. This work proposes a new mathematical programming model to control vehicles operating on a transit corridor minimizing total delays. The model can handle a heterogeneous fleet of vehicles with...

La estructura agrícola productiva y sus interrelaciones a nivel subregional en Antioquia para el período 1995 - 2005 es el objetivo de este artículo. En el desarrollo se hará un recorrido por las diferentes teorías que han abordado la agricultura en la literatura económica y serán las...

Using a Bergson-Samuelson welfare function, we outline a microeconomic interpretation of the effects of the non-linearity in the time/cost relationship for travellers in a congested transport network. It is demonstrated that a marginal cost traffic flow assignment following Wardrop's second...

Workshop 2 examined critical success factors, operational enhancements, appropriate contractual and institutional settings and complementary policies of BRT systems, building off the discussion started two years before in Durban. Even though implementing a BRT corridor is almost always very...

We review the current situation of Transantiago, the fully integrated public transport system covering the Santiago Metropolitan Area in Chile, identifying its current strength, flaws and challenges. The system captured worldwide attention after its premature implementation in February 2007,...

Marginal productivity of salesforce (excluding checkout clerks) in a retail store is difficult to assess. An analytical model is presented here explaining this productivity using salesforce workers per hour as the factor of production (the explanatory variable) and sales transactions per hour as...

ResumenEl presente trabajo analiza la relación entre la concentración de la propiedad rural y el producto agrícola para el departamento de Antioquia y se plantea una metodología para la validación de esta relación a nivel estadístico. Además, se desarrolla una descripción por...

<title>Abstract</title> When traffic safety statistics in less developed countries (even those where enormous progress has been made in the last years) are compared with those of more advanced countries, it is evident that there is still a great deal to be done. Using Chile as a case study, we propose a set of...