SUKKUR: A tractor driver has been killed in a collision between tractor trolley and Shalimar Express. According to media reports, Shalimar Express on its way from Lahore to Karachi collided with tractor trolley at Sukkur and the truck driver died on the spot. The accident occurred due to the negligence of the tractor driver as he attempted to cross without looking at railway track. The rescue teams have shifted the dead body to hospital. The identity of the deceased could not be ascertained.