This clip of a longer video illustrates an interesting phenomena I caught after a westbound train crossed over at the Ferry Ave interlocking complex. As expected the cab signal changes from 30mph (Approach) to 65 mph (Clear) as the train clears the turnout, however the cab signal drops back to Approach shortly thereafter, holding for a second before returning to Clear. This cycles several times before finally holding at Clear. <br /><br />Note, this was on a weekend and we were not following any traffic.<br />...<br /><a href="https://www.youtube.com/watch?v=7-PzbqcKUFQ" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=7-PzbqcKUFQ</a>