Clear to Medium · Rule 407

Indication: Proceed, approaching next signal at MEDIUM speed.

5 mast presentations

High mast signal, double aspect, staggered. top: yellow; bottom: green.
A high mast, staggered, double aspect signal displaying yellow on the top, green on the bottom.
High mast signal, double aspect, inline. top: yellow; bottom: green.
A high mast, inline, double aspect signal displaying yellow on the top, green on the bottom.
High mast signal, triple aspect, inline. top: yellow; middle: green; bottom: red.
A high mast, inline, triple aspect signal displaying yellow on the top, green in the middle, red on the bottom.
High mast signal, triple aspect, inline. top: green; middle: red; bottom: green.
A high mast, inline, triple aspect signal displaying green on the top, red in the middle, green on the bottom.
Dwarf signal, double aspect, inline. top: yellow; bottom: green.
A double aspect, dwarf signal, displaying yellow on the top, green on the bottom.