Been flying out of VKO last 8 years, this was an accident to happen sooner or later. Ruskies have improved a lot since I first flew into VKO but still are way too far from standards in all country.
Knowing VKO I can be sure crash happened on runway intersection, no lights or signs that tell you are entering either runway so truck driver just entered it with no idea he was on it. Rest is speculation and bad luck.