Explanation of Symbols

Block Section

Railway lines with two variants of block section delimiters.

Operation Direction Specifier

Specification of the operation direction on uni-directional lines.

Operation Direction Specifier

Specification of a line with bi-directional operation.

Velocity Meter

The velocity meters used on the model railway detect the passing of the engine or the last car of each train.
(They were originally designed to measure the speed of a train passing it in a particular direction. This direction is (still) indicated by the arrow.)

Relay

Block section equipped with a relay in one of the loops which connect the Inner Circle to the Outer Circle and vice versa.

2-light signal with positions

HP 0 : stop (red)

HP 1 : proceed (green)

3-light signal with positions

HP 0 : stop (red)

HP 1 : proceed (green)

HP 2 : proceed slowly (green-yellow)

3-light signal with positions

HP 0 : stop (red)

HP 2 : proceed slowly (green-yellow)