very short flashes

[11.1.9]

NOTE: This definition was changed in RP-16-17 Addendum 4. Deletions have a strike-through. New text is bold.

In signal lighting: Flashes of millisecond or microsecond duration; this is a relatively new experience in signal technology, and significant claims are made for flash conspicuity.  No generally acceptable vocabulary of terms has yet developed; as a result, communication between different workers is sometimes hampered by an inadequate or misunderstood vocabulary.

« Back to Definitions Index