Twin sisters Khadijah and Khertima Taylor were among three persons killed in a car crash on Sunday.
The 18-year-old sisters and four friends were returning home from a nightclub in San Fernando.
Police said the driver, Anthony Balkissoon, was driving his white Mazda 3 car along the San Fernando bypass road when he lost control at around 4a.m.
The car flipped several times and landed between the pillars of a concrete bridge near the Cross Crossing interchange.
The twins, of Jack Street, Marabella, died at the scene.
Kafiya Gill, 19, died at the San Fernando General Hospital. The driver, 20-year-old Balkissoon, and two others are listed in critical condition.
The Taylors were Sixth Form pupils at the St Joseph Convent, San Fernando.
Gill, of Pleasantville, was University of the West Indies graduate. Relatives said she began working at the South West Regional Health Authority a month ago.
Balkissoon lives at Concord Road, located within Petrotrin's refinery compound at Pointe-a-Pierre.
Police are investigating whether speed and alcohol contributed to the crash.