The reviewer's recommendations for whistle board location shall also be filed with this letter.
Whistle boards shall be installed within six months from the date of the review. Figures 3.14a and
3.14b provide details for whistle board fabrication and placement. Existing whistle boards may be
used until they need to be replaced.
Figure 3-11. Hand and flag signals.
Figure 3-12. Hand and flag signals.
(4) Headlight. The headlight shall be displayed bright by day and night on the front of
every train. It shall be extinguished when a train has stopped clear of the main track to meet a
train, is standing to meet a train at the end of multiple main tracks, or is at a junction. When
switching, locomotives shall display the headlight both front and rear; however, the light does not
have to be on if light is reflected back to the engineer. When switching, locomotives shall dim
headlights when working on tracks adjacent to the main line while a train is approaching from
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