Critical portions will be identified by quantifying the effects of an individual obstruction on the functioning of the network.Р”В®stimation of the probability of breakdowns in the road networks is dealt with in studies of reliability of networks. It must be capable of application in Mexico, within the limits of the information available in that country. Р’вЂ”It is important to quantify the effect that an obstruction on a segment of road will have for the network, and also the probability of obstruction on each segment, since this information is essential for rapid action in the event of such a breakdown, for planning the hierarchy of management and conservation, and for the reР’вЂ“building of outdated roads.Р”Р„ method of quantifying the vulnerability of portions of road networks is required. Hence, any interruptions in these systems will have significantly deleterious effects on the economy in the near future this presents a challenge in the area of transport research (Husdal, 2006), particularly in developing countries such as Mexico, whose economy depends in large part on its sparse and outmoded road network for the transport of goods and people.

Globalization has increased the dependence of national economies on their transport systems. Palabras clave: Tramos crР“Вticos, vulnerabilidad, carreteras mexicanas. A partir de su aplicaciР“С–n a la red carretera de MР“В©xico, se presentan los resultados obtenidos, con la identificaciР“С–n de los tramos crР“Вticos donde la red es vulnerable y se demuestra que es factible aplicar la metodologР“Вa con la informaciР“С–n disponible en MР“В©xico. En seguida se muestra el mР“В©todo para calcular las afectaciones, mediante el uso de una interfaz desarrollada en TransCAD Р’В®. Se discute la metodologР“Вa a utilizar, de acuerdo con la propuesta de Scott y colaboradores y se presenta el modelo propio. Se pone Р“В©nfasis en la metodologР“Вa pero tambiР“В©n se ofrecen los resultados de su aplicaciР“С–n, mediante el anР“РЋlisis de la afectaciР“С–n en el tiempo total de viaje en la red, incluyendo los efectos de cambios de ruta en atenciР“С–n a la capacidad vial. Por ello, en este artР“Вculo se propone un anР“РЋlisis para identificar los tramos crР“Вticos de la red carretera, de acuerdo con los flujos de carga. La posible interrupciР“С–n de la red carretera mexicana cobra mayor importancia por la dependencia de la economР“Вa al transporte automotor. Key words: Critical segments, vulnerability, Mexican roads. Application of the method to the main road network in Mexico has identified critical segments where the network is vulnerable and it has been demonstrated that is feasible to apply the methodology with the information available in Mexico. Calculation of the effects includes an interface developed in TransCAD Р’В®. The method uses the criterion 'effect on travel time', AT a, of Scott et al., but an original model is presented. The emphasis is on methodology, but the results of applying the method are also shown, by analysing the effect on total travel time within the network, including the effects of route changes in response to segment capacities. Therefore, this article presents an analysis to identify critical segments of the road network in terms of freight transport. The potential for disruption of the Mexican road network increases in importance as the economic dependence on road transport increases.

EР’вЂ“mail: 2 July 2009.Р”Р‡inal version accepted: 15 February 2010. EР’вЂ“mail: DivisiР“С–n de Posgrado, Facultad de IngenierР“Вa, Universidad AutР“С–noma de QuerР“В©taro, Cerro de las Campanas s/n, Ciudad Universitaria, C.P. * Facultad de IngenierР“Вa, Universidad AutР“С–noma de QuerР“В©taro, Cerro de las Campanas s/n, Ciudad Universitaria, C.P. Luz Gradilla HernР“РЋndez*, Ovidio GonzР“РЋlez GР“С–mez** IdentificaciР“С–n de tramos crР“Вticos por vulnerabilidad para el traslado de mercancР“Вa en la red carretera pavimentada de MР“В©xico Identification of critical segments by vulnerability for freight transport on the paved road network of Mexico

Network robustness index transcad