The engine has moved onto the branch and the signal can be replaced so lever 14 is restored. Levers 16, 17, 18 and 33 are now free mechanically and lever 19 is still locked by 17 and 18. Lever 18 is locked electrically by occupation of track circuit 18T (which extends from half-way across the main to main crossover to the trap point 17) until the engine has passed clear of the trap points. Click here to restore 18.