LUSAKA, June 24 (Xinhua) -- The Zambian government has issued a second travel advisory alert to truck drivers and transporters entering South Africa following a fresh wave of sporadic attacks on foreign registered trucks driven by foreigners in that country, its embassy in South Africa said on Sunday.

Emmanuel Mwamba, Zambia's High Commissioner to South Africa, said truck drivers and truckers should remain alert and follow security protocols issued by the South African government.

He said it was cardinal that truckers should always use highways as they were well secured with high police presence and avoid using routes which were experiencing picketing, protests or demonstrations.

He however said in a statement that he has been assured by the South African government of intensive security measures that have been established.

According to him, the trade between the two countries will not be interrupted as the South African government had assured of stringent security and safety measures.

About six Zambian registered trucks were recently caught up in separate local violent protests. The six trucks were petrol bombed in South Africa following violent protests that erupted in Limpopo and Kwazulu-Natal provinces, although no lives were lost.