Which code corresponds to the switch locking stick relay?

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Multiple Choice

Which code corresponds to the switch locking stick relay?

Explanation:
In signaling diagrams, each relay or device used in interlocking is given a two-letter code. The switch locking stick relay is the component responsible for keeping the switch held in its required position while a route is set and until conditions are safe to release. The code Ls is the designation assigned to that specific relay, so it directly represents the switch locking stick function. The other codes correspond to different devices or relays and do not denote the locking mechanism for a switch, so they don’t fit the function described.

In signaling diagrams, each relay or device used in interlocking is given a two-letter code. The switch locking stick relay is the component responsible for keeping the switch held in its required position while a route is set and until conditions are safe to release. The code Ls is the designation assigned to that specific relay, so it directly represents the switch locking stick function. The other codes correspond to different devices or relays and do not denote the locking mechanism for a switch, so they don’t fit the function described.

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