The tourist bus was carrying 31 passengers of different nationalities and crashed in to the signboard at Al Rashidiya exit at 5.40 p.m. on Thursday.
Consul General of India to Dubai Vipul posted on Twitter a list identifying the 12 Indian victims. Earlier, eight Ind were reported dead in the accident.
"With great sadness we inform that Indian fatalities in Dubai bus accident has gone up to 12. Our officers are at Rashidiya police station and mortuary to extend all assistance. Our effort now is to get formalities completed soon so that mortal remains can be repatriated soon," he tweeted.
He told the Khaleej Times that repatriation of the bodies is expected to begin on Saturday or Sunday. The Consulate General of India tweeted that it "is in touch with relatives of some of the deceased and awaits further details for others to inform their families".
Twelve Ind who died in the mishap are: Vikram Jawahar Thakur, Vimal Kumar Karthikeyan Kesavapilaikar, Kiran Johny Johny Vallithottathil Paily, Feroz Khan Pathan, Reshma Feroz Khan Pathan, Ummer Chonokadavath, Nabil Ummer Chonokadavath, Vasudev Vishandas, Rajan Puthiyapurayil Gopalan, Jamaludeen Muhamedunni Jamaludeen, Prabula Madhavan Deepa Kumar and Roshni Moolchandani.
Four Ind were discharged after receiving treatment in Rashid Hospital.
( With inputs from IANS )