The light tram can be equipped of an autonomy consisting in embarked batteries or other devices, that it will use otherwise if there is a current breakdown the electric supply design will be able to be calculated thus with this constraint, without redundant electric substations, with an objective of cost savings. The third type is only partially feasible, if it is necessary to construct a railroad track until the garage that could be an extended bus depot in which there are no catenaries. In the case of the light rail transit, the first two factors of cost reduction are possible. At the end, we analyze research and development which could lower the cost and we consider the intermediate system capacities : we always keep in mind that transit project costs are in relation to the transit offer.Īccount the lightness of the axle load and the number of axles passage during the tracks. We describe in a first part, the industrial offer of rubber-tyred systems and streecars and in a second part we analyze the applying domain with benefits recalling the inherent qualities of tyre, and limits of these systems. This paper deals with analyzing the buses, trolleybuses and guided vehicles intermediate systems field of application. The first assessments showed that it is possible to achieve 30% of a standard light rail investment cost adopting such a system. The concept of rubber-tyred intermediate guided transit system appeared as an attractive means to combine for the medium importance projects, the qualities of the light rail transit with the economic benefits of the road systems, to achieve in some manner a light rail system at the best cost. A system supplying a quality of service close to the subway's one, but allowing a spatial cover less costly and a larger flexibility and adaptability of the offer to demand, corresponds to an important market that does not justify a large capacity system such as a subway. The concept of intermediate system has to be considered in relation with the search for a good compromise between advantages and inconveniences of bus and subway.
Vehicles being able to circulate with batteries or a thermal motor foreseen in the bimodal Use a bus extended depot without putting switches on the tracks and supply catenaries, the Located far enough from the line terminus, along the existing road network, and to Finally, in some cases, the use of bimodal vehicle allows to go to the depotworkshop, Longitudinal networks if one protects them against leakage currents Traffic, the possibility to keep transverse supply networks under the tracks, but also Then, considering the light pavement thickness necessary in front of the calculated First, the most favourable design of structures as regards fatigue, that takes intoĪccount the lightness of the axle load and the number of axles passage during the tracks use Three types of direct cost reduction can be obtained in the case of the tram on rubber-tyres : The transit system in the historic city centers, the space spared, compared to that of bus right-of-way, facilitates the improvement of the other uses of the street (parking, sidewalk, bicycle path.) or its embellishment.Ī large part of savings announced by the arrival of the new intermediate systems on the Gauge of the vehicles to which are added a protective air space. Indeed, the guidance device permits the right-of-way to stay within the limits of the dynamic assures an optimal link between platform and vehicle in the stations. encourages the separate right-of-way insertion while reducing the land needs, makes easy, to some degree, the manufacturing of larger capacity vehicles than Offers several advantages, among which we can note : The first assessments showed that it is possible to achieve 30% of a standard light rail investment cost adopting such a system.Īs for the streetcar, the guidance device of the intermediate guided transit systems on tyres With the economic benefits of the road systems, to achieve in some manner a light rail system at the best cost. Means to combine for the medium importance projects, the qualities of the light rail transit The concept of rubber-tyred intermediate guided transit system appeared as an attractive
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