Truckers' protest in Santiago de Compostela on Monday.
Supplies of hygiene products are being affected.
The interior ministry is being called upon to adopt urgent measures.
The government wants to avoid a strike by the hauliers that is due to start on 28 March.
Truck drivers protested in Palma on Monday.
Pickets are preventing goods from being loaded onto ships.
Hauliers protested in Barcelona on Tuesday.
Action by hauliers on Monday caused some traffic problems in Palma.
An indefinite strike, but not backed by unions or the main transport confederation.