Which term is a switch that will restore to the normal position after being trailed through?

• A. Hand-Operated Switch
• B. Electric Lock Switch
• C. Interlocking Switch
• D. Spring Switch

Answer: (D)

The defining idea here is an automatically returning switch. A spring switch uses a biasing spring to push the points back to their normal (main) position after a train passes through or trails the switch. This means it doesn’t rely on manual action or an operator to reset it, and it isn’t about locking in a position or being part of an interlocking system. The spring mechanism ensures the switch reverts to its standard route once the train no longer applies force, keeping the track ready for the next movement. That automatic return is what makes this term the correct choice.