According to Polish regulations, heavy transport can only move across country only at night time, leading to the two convoys' stopping near the Polish-German border.
The Netherlands Security Council is expected to ask family members of those who died in the MH17 crash to examine the plane wreckage as part of the investigation, as soon as the convoys reach the Gilze-Rijen Air Base in the Netherlands.
According to a preliminary report issued by the Dutch Safety Board early in September, the plane most likely broke up in mid-air as a result of structural damage caused by a large number of high-energy objects that penetrated the aircraft from the outside.
Kiev has accused eastern Ukraine's pro-independence forces of shooting the plane down, but has not provided any evidence to back this claim. Local militia leaders claim they do not have weapons capable of shooting down a plane flying at 32,000 feet.
The joint inquiry team into the crash now includes the Netherlands, Ukraine, Australia, Belgium and Malaysia, as well as other international partners. Amsterdam is leading the investigation into the tragedy.