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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 : X551A   
  Type : Express   
  
  
  Journey Time : 70 mins  
  
  
  Stages :   Tambaram East ,  Convent ,  Mahalakshmi Nagar ,  S.I.V.E.T ,  Nanmabgalam Rd. Jn. ,  Veerabadra Nagar ,  A104 ,  K120 ,  Madurapakkam ,  Ponmar ,  Mambakkam Temple ,  Mambakkam Roce Mill ,  Camp ,  Pudupakkam ,  Samiyar Pannai ,  Kelambakkam   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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