Final answer:
R44 and subsequent subway cars come with 115 horsepower traction motors, allowing for efficient transit.
Step-by-step explanation:
The R44 and up series subway cars are equipped with 115 horsepower traction motors. These motors power the wheels of the subway car, enabling it to move passengers across the city's transit system efficiently. The R44, introduced in the 1970s for the New York City Subway and the Staten Island Railway, was among the first subway cars to use this advanced technology, providing a smoother and faster ride.
Traction motors are electric motors specifically designed to provide power to propel vehicles, such as trains and electric cars. These motors convert electrical energy into mechanical energy, generating the necessary torque to move the vehicle.
In the case of R44 and up cars, they are known as electric locomotives used in railroad transportation. These locomotives are equipped with powerful traction motors that deliver a significant amount of horsepower to move heavy loads and provide high-speed performance.