KingOfBongo:
This is the system, the same poles, picture taken on April 10th.
Foto - portal TVN24.pl
Clearly no bulbs iside...
The images you linked are from April 13th.
The article in the Polish media on Militia repairing the lighting system seems
to be true, and my theory, mentioned above wrong...
Google T?umacz
Whatever the system was at the time of the accident, it was mostly INOP.
More pics, Russian site.
Google Tłumacz