 The Petit Valley bus starts at the Port of Spain Bus Terminal, proceeds along Independence Square, exiting through one of the side streets to Tragarete Road, through the Western Main Road, St. James, via the overpass through the Main Road in Cocorite, then to Petit Valley.The PTSC bus which operates from Port of Spain to and from Carenage or the bus which operates from Port of Spain to and from Diego Martin passes along Mucurapo Road, St. James.These buses would have started at the Port of Spain Bus Terminal, proceeded along Wrightson Road, with a turn off which takes them to Ariapita Ave and then to Mucurapo Road, then to the Foreshore  to West Mall where their routes separate.