It is indeed possible to drive a locomotive using a brushless DC traction motor, which many modern locomotives already utilize for their efficiency and reliability. These motors offer precise control over speed and torque, making them ideal for locomotives that require variable power levels. The discussion also highlights the use of Switched Reluctance Motors (SR motors) by companies like LeTourneau and Bombardier as effective traction motors. Understanding the specific design and specifications of both the locomotive and the motor is essential for optimal performance. Overall, brushless DC motors are a viable option for locomotive propulsion.