A livery cab driver was arrested for allegedly raping a 12-year-old girl in the backseat of his car in Brooklyn on Monday, police said.

Rafael Martinez, 32, is accused of committing the horrific act as the young victim tried to get to her Bedford-Stuyvesant home from a relative’s house in Fort Greene at about 6 p.m., according to police sources.

Martinez pulled the car over during the roughly 4-mile trip, jumped into the backseat and raped his young passenger, cops said.

The driver then dropped the victim off at her original destination, police said.

The girl was taken to Woodhull Hospital on Monday night and police were called there about 8:45 p.m. for the reported crime, police said.

Police were able to track down Martinez through his Brooklyn-based employer, Evelyn Car Services, sources said.

He was hit with a number of charges, including rape, criminal sex act and sex abuse.

Martinez was fired from his job. Evelyn Car Services did not immediately respond to a request for comment.