What are the two main types of railway switches?

The two main types of railway switches are indeed classified as mechanical switches and electric switches. Mechanical switches rely on physical components and manual operation to redirect train traffic. These switches can be operated by hand or through a simple mechanical mechanism, allowing personnel to manually move the switch points into the desired position.

Electric switches, on the other hand, utilize electric power to operate the switch mechanism. This allows for more efficient control, particularly in situations where the switch needs to be controlled remotely or in a busy yard where multiple switches can be managed from a central control point. Electric switches enhance safety and operational efficiency, as they can be controlled quickly and can often be linked to signaling systems.

The other options do not correctly represent the primary classifications of railway switches. Hydraulic and pneumatic options refer to the methods of operation rather than types of switches, while manual versus automated categories indicate the operation method rather than the switch type itself. Additionally, the differentiation between single-track and double-track switches pertains to the layout of the tracks rather than the switching mechanism itself.