Automatically alternate the movement of trains using the scenes of N-2 and N-1

See the schema of level N-2 below.

(1) the first train engaging on track 1 crosses the A11 ILS that guides the diverging position switch A4, and then crosses the A12 ILS which command the deflected position A2 switch, and then stops.

(2) the second train undertakes on track 2 by virtue of the orientation of the A2 switch controlled by the previous train. It crosses the ILS A21 which orients the A4 switch in right position (thus allowing the departure of the first train parked on track 1), and then crossed the A22 ILS which commanded the A2 switch in right position then stops;

(3) the first train makes its trip then comes back on track 1 commander switches A1 and A2 as shown in (1), allowing in this way the departure of the train parked on channel 2;

(4) the second train makes its trip then comes up again on the way 2 commander switches A1 and A2 as shown in (2), allowing the departure of the train parked on track 1;
and so on ... in operator similarly the slides of the level N-1 and knowing that my circuit has 4 cantons, I can circulate alternately 5 different trains.
NB : switch A3 is still upright, the furnishing of a train on the track 3 control the orientation of switches A1 and A3 using the ILS A31 and A32

Click on the image to zoom

ILS

(Flexible blade switch)

Placed between the rails, it establishes a contact to the passage of the magnet under the locomotives allowing control switches (or canton feeds).