The Moveble point frog switch (continuous) is a type of switch. Which is the name for it?

• A. Moveble point frog switch (continuous)
• B. Manual Switch
• C. Tongue and Mate Switch
• D. Electric Derail Lock Switch

Answer: (A)

In railway terminology, the exact designation of a switch matters because it describes the specific mechanism and construction. A moveable point frog switch (continuous) is a precise name for a design where the point blades move to guide the wheels while the frog—the crossing area—remains part of a continuous rail through the switch. The word “continuous” signals that the rail through the frog is a continuous piece, which is a defining characteristic of this type.

Because the question asks for the official name of this switch, the term provided is the exact designation used in practice for that design, making it the best fit. The other terms describe different kinds of switches or features (a switch operated manually, a different historical type, or a switch with a derail-lock mechanism) and do not capture the specific design described.