Covers Panel Interlocking (centralized control panel operation of signals/points) and Route Relay Interlocking (RRI) — a relay-based system that sets an entire route with a single operation, a major step up in operator efficiency from individual signal/point control.
Key Points
- RRI's key advantage over older systems: setting an entire route (multiple points + signal) with a single button press, rather than operating each element individually.
Content Status
Draft note, grounded in real official syllabus text found via research but not yet cross-checked against the primary RBE PDF directly. Treat as study-aid only until verified.