Kolkata: Two traffic sergeants rescued a 4-year-old boy who fell from a pool car while travelling home from school on Darga Road on Friday.Police said traffic sergeants — Raj Vijay Banerjee and Suman Mukherjee — were on duty in the area. They went to the spot as soon as the matter came to their notice and rescued the boy. The incident took place on Darga Road at Beniapukur. The boy, who is a nursery student, was travelling in a Maruti Omni car. Its sliding door somehow opened when the driver applied a sudden brake and the boy fell down from the car. The boy, however, remained unhurt. He was later handed over to his parents, who didn’t lodge any complaint against the pool car. The car has been intercepted by the police.