Speno

[2] The other main activity for which specially designed Speno trains are used is measuring and inspecting railway tracks.

After running over a specific route, the system generates reports containing all (potential) problems with the tracks.

The same equipment can also be used after grinding or maintenance or renewing of a route to check that the builders have laid the tracks according to requirements.

[3][4] The measuring and inspection trains check not only the tracks and points but also, in the case of electrified routes, the overhead or third-rail power source.

Initial investigation showed that the end of the track in this location was not marked with a light but only with some unlit signs.

Circumstances that might have contributed to the accident: The Dutch traffic safety board (IVW) banned BAM from using Speno trains until it could prove that it could operate them in a safe manner.