Large queues have formed outside petrol stations in Iran as oil truck drivers went on strike, the Anadolu Agency reported.
Drivers went on strike to demand improved working conditions, local media reported.
Iranian oil truck drivers protested in May against the rise of insurance prices, permit fees, high commission rates, the high cost of spare parts and increasing operational costs in light of their fixed wages.
The Iranian government pledged to solve their problems but nothing has been done to date.
Iran saw nationwide protests in late December and early January over its worsening economic situation. The US imposed new sanctions on Tehran in August after unilaterally withdrawing from the internationally backed nuclear deal which saw the Gulf state face restrictions on its nuclear programme in return for the lifting of sanctions.