In Slovakia, the main border crossing with Ukraine was also blocked on Tuesday, although the country's haulers' union called it the action of a single truck.
The group has still warned it could join Polish truckers in protest.
The spillover of long border queues hit Hungary on Wednesday, with the main border crossing, Zahony, seeing long queues of trucks waiting to enter Ukraine.
Polish truckers will also begin blocking the Medyka crossing together with farmers on Thursday, a protest organizer said.
On Sunday, Ukrainian authorities said about 3,000 mostly Ukrainian trucks, including those carrying fuel and humanitarian aid, were stuck on the Polish side of the border.
Persons:
haulers, Trucks, Dennik, Boldizsar Gyori, Jason Hovet, Bernadette Baum
Organizations:
Truckers, European Union, Authorities, Hungarian Tax, Customs Authority, EU
Locations:
BUDAPEST, Ukraine, Poland, Slovakia, Slovak, Hungarian