Alternative method of third rail electrical pick-up for street trams
Bordeaux tram using APS on route B near the Roustaing tramstopA section of APS track showing the neutral sections at the end of the powered segments plus one of the insulating joint boxes which mechanically and electrically join the APS rail segments
Alstom APS, also known as Alimentation par Sol or Alimentation Par le Sol (which literally means "feeding via the ground"), is a form of ground-level power supply for street trams and, potentially, other vehicles. APS was developed by Innorail, a subsidiary of Spie Enertrans, but was sold to Alstom when Spie was acquired by Amec. It was originally created for the Bordeaux tramway, which was constructed from 2000 and opened in 2003. From 2011, the technology has been used in a number of other cities around the world.[1]
APS is used, primarily for aesthetic reasons, as an alternative to overhead lines. As such, it competes with other ground-level power supply systems but also with energy storage systems such as batteries. In 2015, Alstom developed a derivative of APS, Alstom SRS (Système de Recharge statique par le sol or static-based ground charging system), which can be used to recharge battery powered trams and buses while they are stationary at stops.[2]
Alstom further developed the system for use by road vehicles such as semi-trailer trucks and cars. The electric road system has been tested for compatibility with snow plows and for safety under exposure to snow, ice, salting, and saturated brine.[3] France will trial the electric road system on a public road in the Rhône-Alpes region between 2024 and 2027.[4]
^"Third-rail trams across the Garonne". Railway Gazette International. 2004-02-01. Archived from the original on 2010-04-26. Retrieved 2008-05-02.
^"Alstom transfers tram power supply technology to buses". Rail Insider. 26 September 2019. Archived from the original on 29 November 2020. Retrieved 29 November 2020.
^Patrick Dupart (February 11, 2022), Compatibility of an in-road Electric Road System with winter service operations(PDF), Alstom, PIARC
^Jean-Philippe Pastre (June 30, 2023), "L'APS d'Alstom bientôt testé sur les routes", TRM24
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