The crash occurred on Finnish national road 4 (E75) 20 kilometres (12 mi) north of Äänekoski, and left the bus driver and 22 passengers dead; fourteen were injured.

The crash occurred when the trailer of the southbound truck began a soft swerving movement on black ice, which intermittently covered the highway.

The main contributing factors to the crash were the choice of an unfavorable route, the high speed of the truck and the possible reduced alertness of the driver.

The SIAF issued seventeen safety recommendations, the most important of which could be considered to be the transfer of responsibility for transport from the driver alone to all parties involved.

The SIAF considered the crash-worthiness of the front end of the bus to be insufficient in such a crash, but did not make any recommendations to improve the situation.

On 31 May 2006, the Äänekoski District Court gave the truck driver a suspended sentence of three months' imprisonment for endangering traffic safety, 23 fatalities and three injuries.