From what I remember it was like that - Javtokas was speeding, he was going over 110km/hr in 80km/hr zone and passing other cars when truck decided to take left turn. Javtokas just had no time to stop and crashed into turning van. At least thats how it was reported in local media.
This is from Wiki
On May 1, 2002, while driving his Honda CBR1100XX motorcycle at a speed of around 140 kilometers per hour (87 miles per hour) towards Vilnius, he had a serious accident. Approaching a side road, Javtokas started to pass a van, but the van driver did not see the motorcycle and turned left. There was no chance for Javtokas to stop and he hit the van, losing control but not the bike, which crashed into a car in the opposite lane. Javtokas flew dozens of meters and landed in bushes off the road, crushing his thighbone, breaking his shoulder, and injuring his knee and kidneys. He returned to basketball for the 2003-04 season