Farmers have blocked border crossings between Belgium and the Netherlands as they continue to protest across Europe, according to Belgian and Dutch traffic centres.
Local media reported that protests started late on Thursday night on the Belgian side with some Dutch farmers joining later.
A key crossing near Antwerp, Belgium's second-biggest city and home to Europe's second-biggest port, has reportedly been blocked.
It comes as farmers across Europe protest against taxes, rising costs and cheap imports, with thousands of tractor-driving protesters descending on Brussels setting off fireworks and throwing eggs at the European Parliament on Thursday.
Farmers have said they are not being paid enough, are choked by taxes and green rules and face unfair competition from abroad.
Nearly 100 French farmers were also arrested in Paris after they forced their way into Europe’s biggest food market.
Two French farming unions have called off the “siege of Paris” after securing concessions from the Government with a blockade of major roads around the capital on Thursday.
Farmers elsewhere in Europe are similarly angry with unrest seen in Germany, Poland, Greece, Portugal and Romania.
Dutch authorities have advised against travelling to Belgium on Friday if possible.
In western Belgium, farmers have been blocking trucks from entering or leaving the port of Zeebrugge, part of Port of Antwerp-Bruges, for several days, with Flemish broadcaster VRT reporting that almost 2,000 trucks are stuck.
Local police said they were providing the drivers with catering and sanitary facilities.
A spokesperson for the Zeebrugge port said on Wednesday that the docks were filling up and would reach capacity if protests continued throughout the week.
The protests have exposed tensions over the impact on farming of the EU's drive to tackle climate change, as well as opening the door to cheap Ukrainian imports to help Kyiv's war effort.