Gotta admit, I have toured the TA, PC, NT, AC, ST, GPN, LEC, and several other 30+ days tours in my 35 years and 50+k miles of loaded touring and have never seen a repeated "coordinated" effort. I am not saying these repeated occurrences did not occur to you (only you and the "criminals" were present) but perhaps you should re-evaluate the effort it would take to do this. And I do agree that it happens occasionally by happenstance to ME.
Heck, if I were driving and to time it so I pass another car when a cyclist (who is not participating in this effort AND is crossing an expansion joint at the precise time) is in the between us AND to make it happen hundreds of times strains credibility. Please note I am NOT saying this does not happen but in all my tours, I have it happen once or less per week of touring and never the same trucks over and over. Disclaimer: I do not track when I cross expansion joints but will unfortunately probably begin doing so.
What gets me is how the EVIL dogs out there ALWAYS attack in pairs (one on each side) and ALWAYS on the uphills, in the rain, against the wind, while crossing expansion joints.
Let's go ride and find some dogs and truckers! Back to the original thread now.