Rule 438

Signal aspect: Take or Leave Siding or Other Track.

Indication: Take or Leave Siding or Other Track.

1. A single aspect dwarf signal displaying flashing red.
2. A double aspect dwarf signal displaying red on the top, flashing red on the bottom.
3. A high mast, inline, double aspect signal displaying red on the top, flashing red on the bottom.
4. A high mask, inline, triple aspect signal displaying red on the top, red in the middle, flashing red on the bottom.