Co. said Tuesday it will gradually phase out the older tank cars used to transport diesel fuel that it owns as part of its effort to improve safety in the wake of several fiery derailments. Canada’s biggest railway said it would spend 7 million Canadian dollars ($6.25 million) to remove from service the 183 DOT-111 railcars that transport fuel for its locomotives. The rail operator said it would replace those cars with 40 new ones meeting the latest safety specifications by the end of the year. It also plans to phase out and replace 143 DOT-111 cars that it leases for fueling. Mark Hallman, a spokesman with CN, said that DOT-111 railcars that ship crude oil across its rail network are owned by oil shippers and leasing agencies. He said Montreal-based CN is providing incentives to customers to replace the older DOT-111s and acquire more robust tank cars that […]