Head on train crash movie, on a bridge, derailment after collision, behind the scenes. HO scale fail

We tried to reproduce a spectacular and extreme accident: the ultimate head on trains collision of the Geoff Murphy's Under Siege 2 movie action scene and supervised by Richard Yuricich (the visual effects supervisor).
We used 1:87 scale models freight trains and bilevel superliner passengers coaches for the derailment, and a 17 ft long 3D printed bridge, caught on 7 cameras ! Behind the scenes with real shots and raw footage, no CGI !

Casey Ryback (Steven Seagal) escaped just before the trains crashing and derailing ;)

0:00 Final rendering
0:19 Build the bridge
1:17 Tests with trains
2:02 Final preparations before filming and fails !
2:30 Take 1 with multi-angle view, crash and derailments
2:57 Take 2 with multi-angle view, train wreck

Learn more about this build :
   • Making of a miniature train collision...  

Bridge designed by me then 3D printed by:
  / cd3dprint  
&
https://3d.ras.ovh

Miniature freight Southern Pacific train HO Scale :
4x locomotives SD40T-2 Athearn + 10x custom tank cars Jouef

Miniature Grand Continental passenger train HO Scale :
2x locomotives GP35 & GP40 Athearn + 5x passenger car Superliner Con-Cor + 1x baggage car Athearn

Slow motion cameras:
Sony A7S III - 2K 240 fps
Sony A7S III - 4K 120 fps (slowed down during editing)
Sony FX9 - 2k 180 fps (slowed down during editing)
Sony FX6 - 2k 120 fps (slowed down during editing)
Panasonic GH5s - 2k 180 fps (slowed down during editing)
Gopro Hero9 Black - 2k 200 fps