Is the axle-driven refrigeration unit commonly used in today's railway refrigeration?

The axle-driven refrigeration unit is not commonly used in contemporary railway refrigeration systems. The prevailing trend has shifted toward more modern and efficient refrigeration technologies that focus on electric and mechanical systems, which allow for better control of temperature and reliability compared to axle-driven units.

Many rail systems now use advanced technologies such as diesel or electric-powered units that can provide higher efficiency and are better suited for the demands of modern freight transport. The axle-driven systems, while historically used in some railway applications, often face limitations related to efficiency, maintenance, and operational flexibility, leading to their decline in new models and replacements. Therefore, it is accurate to state that axle-driven refrigeration units are rarely found in today's railway applications.