What is the main reason for operators to coast as much as possible?

Coasting is a driving technique that involves allowing the train to move without applying power, which is primarily beneficial for reducing power consumption. By coasting, operators can take advantage of the train's momentum to maintain speed without using additional energy from the propulsion system. This not only helps in conserving fuel or energy resources, thereby lowering operational costs, but also contributes to a more efficient overall performance of the train.

While enhancing passenger comfort, minimizing wear and tear on equipment, and increasing travel speed are important considerations, they are not the primary motivations for the practice of coasting. Instead, the focus on energy efficiency stands out as a crucial aspect of modern train operation, especially in an era where sustainability and cost-effectiveness are paramount in the transport industry.