Details are given of an experimental bus which has been operating in Esslingen, Germany, since 1975. The bus has nearly 3 tonnes of batteries and can run up to 10 km off the wire. The batteries and electric motor of the trolley bus are in parallel, so that the batteries can be recharged while the bus is running on the wire. There is regenerative braking to save up to 20% of the energy, thus extending off-wire mileage. The trolley poles can be automatically raised and lowered; when the driver presses a button to indicate whether the wire is above, to the right or to the left of the bus. The pole automatically raises and shifts to the correct side until a special sensor touches the wire. The sensor aligns the electrical contact shoe of the pole on the wire. The entire operation takes 15 seconds and can be done while the bus is picking up passengers. This leads to an important saving in the wiring at junctions, which is the most unsightly and expensive part of a trolley bus system to maintain. With the German bus no junctions are needed, the poles are lowered before the bus leaves one set of wires and are raised again at the next stop. /TRRL/

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  • Corporate Authors:

    IPC Magazines

    66-69 Great Queens Street
    London WC2E 5DD,   England 
  • Publication Date: 1976-2-19

Media Info

  • Features: Figures;
  • Pagination: p. 395
  • Serial:
    • Volume: 69
    • Issue Number: 988
    • ISSN: 0262-4079

Subject/Index Terms

Filing Info

  • Accession Number: 00137496
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 6 1981 12:00AM