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  *Frequency is approximate & applicable during peak traffic hours.| Name | From | To | Frequency in mins*Freq. in mins* | 
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 |  |  | 
  Name : S27H   
  Type : Delux   
  
  
  Journey Time : 95 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Lucas Tvs ,  Ambathur Estate ,  Dunlop ,  Amb Ot ,  Thirumullaivoayl ,  Polytechnic ,  Avadi   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  | 
  Name : X27H   
  Type : Express   
  
  
  Journey Time : 95 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Lucas Tvs ,  Ambathur Estate ,  Dunlop ,  Amb Ot ,  Thirumullaivoayl ,  Polytechnic ,  Avadi   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  | 
  Name : S27L   
  Type : Delux   
  
  
  Journey Time : 65 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Mogaipair Road Jn. ,  Mogapair West   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  | 
  Name : X27L   
  Type : Express   
  
  
  Journey Time : 65 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Mogaipair Road Jn. ,  Mogapair West   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  | 
  Name : S27LET   
  Type : Deluxe   
  
  
  Journey Time : 65 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Mogaipair Road Jn. ,  Mogapair West   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  
  |  |  |  |  | 
  Name : S27N   
  Type : Deluxe   
  
  
  Journey Time : 60 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Fire Station ,  Mogapair East   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  | 
  Name : 27R   
  Type : Ordinary   
  
  
  Journey Time : 90 mins  
  
  
  Stages :   Anna Square ,  Triplicane ,  Anna Road P.O./Dams Road ,  Postal Audit Office ,  Sterling Road ,  Nungambakkam R.S ,  Hotel Arun ,  Anna Nagar Circle ,  Thirumangalam ,  Lucas Tvs ,  Ambathur Estate ,  Dunlop ,  Amb Ot ,  Oragadam O.T. ,  Oragadam   Loading.. Please wait..  Draw Bus Route*  *Approximate path from known stage locations.
 *Roads may not be same as that used by the buses.
 |  *Aggregate frequency computed using 25 most frequent routes alone.
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