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Alstom launches Attractis and SRS urban solutions


Alstom has previewed Attractis, the integrated tramway system for growing cities and SRS, a new ground-based static charging system for both trams and electrical buses at UITP 2015 in Milan.
Alstom Transport President, Henri Poupart-Lafarge, said: “The Alstom’s strategy is driven by continuous innovation to develop and provide sustainable solutions, at an affordable cost, in order to respond to urban mobility needs. This is illustrated by the innovations launched at UITP. With these new solutions, Alstom reinforces its collaboration with cities to help them solve the economic and environmental challenges they are facing.”
Attractis is an integrated tramway designed for fast growing cities with high population density but not yet equipped with a tram system. The project incorporates Alstom’s Citadis tramways, building the infrastructure and maintaining the entire tram system. In partnership with a civil works company, Alstom builds the entire infrastructure and ensures the testing and commissioning of the entire line working with the operator.
Attractis can carry between from 4,000 to up to 14,000 passengers per hour and per direction. The footprint of a two-way Attractis line is comparable to that of a Bus Rapid Transit (BRT). Should ridership increase, the capacity of Attractis can easily be adapted using the same dedicated lane, whereas the footprint of a BRT lane needs to be doubled.
SRS allows vehicles to run autonomously between stops without the use of catenary and can be used by a large range of electrical buses. SRS is based on the technology of the Alstom APS solution used by Citadis trams. Whereas APS supplies power to the tram while it is still running, SRS store energy recharged during tram stations stops in less than 20 seconds. Electrical power comes from compact power supply cabinets that are smoothly and easily integrated into stations. Collector shoes (contact blocks), fitted under the tram, make contact with the conductor rail, providing electric traction power to the tram. Supercapacitors installed on the roof of the tram store energy via a ground-based conductive rail which provides traction power to the vehicle through the collector shoes.