 |
| |||
| block signal interlocking; interlocking with the block system | |||
|
enclavamiento de bloqueo : 2 phrases, 1 sujets |
| Communications | 2 |
|
| |||
| block signal interlocking; interlocking with the block system | |||
|
enclavamiento de bloqueo : 2 phrases, 1 sujets |
| Communications | 2 |