Large groups of refugees and migrants in Hungary are trying to walk to the Austrian border, after defying official efforts to stop them.
Hungary has announced it will send buses to transport them to the border.
As darkness fell, police advised around 1,000 walkers on the main motorway to Vienna to put on light-coloured clothing so that they could be seen.
Earlier on Friday another group escaped along railway tracks in Bicske, to the west, from a train stopped by police.
European Union states are struggling to agree on how to deal with the crisis.
The Hungarian, Czech, Slovakian and Polish prime ministers have rejected quotas for EU nations.
In a statement the leaders rejected “any proposal leading to introduction of mandatory and permanent quota for solidarity measures”.
Source: Migrant crisis: Hungary migrants start walk to border – BBC News