The accident occurred in Kanpur Colony in Jalandhar district's Maqsudan area, Piara Singh, SHO of Maqsudan Police Station, said.
The driver of the truck, which was laden with construction material, hit the pedestrians crushing them to death while two others were injured, he said.
A case has been registered against the truck driver, who sped off after the incident, he said.
The three-wheeler driver had parked his vehicle along the roadside and had gone to fetch the passengers.