Skybus Metro

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Not to be confused with other uses of the name "Skybus".

The Skybus Metro is a prototype suspended railway system invented by Indian technologist B Rajaram with the Konkan Railway.[1] The system consists of an elevated track with the cars suspended below, similar to the Schwebebahn Wuppertal or H-Bahn systems in Germany.

A 1.6 km (1 mi) test track in Margao, Goa started trials in 2004, but on 25 September, one employee was killed and three injured in an accident when the coaches hit the concrete track pillars.[2] The test track was supposed to be extended to 10.5 km, but no progress has been made since the accident, and the system has not been adopted anywhere else in India.[3]


Skybus can run at 100 km/h using electric power,[citation needed] with suspended coach shells that carry the passengers.


A Skybus Metro Railcar suspended at a station on the track at Margao, Goa, India. The 1.6 km test track was abonded in 2004 after an accident. The system looks like a "monorail" but there are two conventional steel rails on the overhead concrete beam, with the car hanging from this.

Heavy 52 kilograms per metre (100 lb/yd) rails of standard gauge are placed in 8m x 2m-box enclosures. These rails are supported over 1m diameter columns 10m tall, spaced at 15-20m intervals on pile foundation. This structure is constructed in the divider space between road lanes. Sky Bus follows existing road routes without disturbing traffic.


Two standard axle "bogies" provide the drive mechanism. Each bogie is driven by 3-phase alternating current (AC) motor. A third rail provides power. Braking is either regenerative (returning electricity to the grid) with supplemental disc and (emergency) mechanical braking. Power is delivered to the vehicles using brushes or by current carrying wheels.


The coaches are double walled lightweight shells with wide larger windows & are suspended below the rails. The air conditioned coaches have 4m-wide automatic doors. They offer audiovisual information to passengers. Each pair of coaches carries 300 passengers. Each coach is 9.25m long and 3.2 m wide. "Trains" consist of two coaches, with total length of 18.5m.


The traverser automatically shifts units between tracks. The traverser is a modified form of transverser used in others industries for lifting & shifting objects. In the traverser a platform of track is hung to a bogie which consist of a motor & is also mounted on the track. The traverser acts like a station. A distance of 50m from the last station to the traverser is maintained to provide holding capacity for two units as a third unit is getting traversed in case of unforeseen delay.


A Skybus Metro car at a station

The station is an air-conditioned platform 5.5m above ground. Stations have automatic doors and lifts. A smart card opens the station door. The station fits in a 50m long spot.

Margao test[edit]

In 2004 the Konkan Railway carried out a test of Sky Bus in Margao, Goa with the help of Goa state government. On 25 September, one employee was killed and three injured in an accident, ending the trial.[4]

The track ran 1.6 kilometre (1 mile) The test track was supposed to be extended to 10.5 km. Rajaram defended Sky Bus, stating that the accident was avoidable.[5]

The steepest gradient was 2%. The sharpest curve had a radius of 100m. The maximum radius of vertical curve was 3375m.[citation needed]

See also[edit]


  1. ^ "Konkan Rly to invite EOI for Sky Bus metro". Deccan Herald. 
  2. ^ "The Hindu : National : Sky Bus Metro resumes after 3 months". 
  3. ^ Pandey, Vineeta (2005-03-15). "Skybus project: Fantasy or reality?". The Times of India. Retrieved 2006-06-07. 
  4. ^ "National : Sky Bus Metro resumes after 3 months". Chennai, India: The Hindu. 2004-12-23. Retrieved 2010-08-11. 
  5. ^ "ACD article 20th july 2010". Retrieved 2012-11-26. 

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