North American Signaling:

SP single track Automatic Block Signaling

by Carsten S. Lundsten

Document Revision History

18-01-2002

Page moved to the lundsten.dk domain.

25-09-2000

All illustrations dupplicated in a version showing color light signals.

Extra illustration added for "Increasing Train Size and Speed".

Minor text changes.

Duplicate file with "printer friendly" colors added.

25-09-2000

History Document created.

[Back]