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 multiangle view, crash and derailments
2:57 Take 2 with multiangle 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 SD40T2 Athearn + 10x custom tank cars Jouef

Miniature Grand Continental passenger train HO Scale :
2x locomotives GP35 & GP40 Athearn + 5x passenger car Superliner ConCor + 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