THE LTA says stickers placed on the back of vehicles, usually advertising a product, branding an organisation or used in a political campaign is a legal form of advertising.
Authority CEO Naisa Tuinaceva said this was allowed under the relevant code of practice governed under the Land Transport Act.
"The code of practice specifies that the sticker must be transparent when viewed from inside of the vehicle to allow the driver a good vision of traffic behind him, aided by his side mirrors," Mr Tuinaceva said.
He said media reports of LTA failing to stop private cars that were illegally running as taxis and spotting political campaign stickers were wild allegations without any real basis.
Referring to comments by Fiji Taxi Association general secretary Rishi Ram that the use of political party stickers on the rear of vehicles was illegal, he said Mr Ram was an aspiring politician who planned to contest the upcoming general election.
"He should stop using the Fiji Taxi Association to promote his political agenda. The Fiji Taxi Association is a stakeholder of the LTA and we value our relationship. He should not manipulate and use FTA to launch his political egos.
"It appears Mr Ram is confused as majority of the cars that have political stickers are taxis, majority of whom are members of the Fiji Taxi Association."
Mr Tuinaceva called on Mr Ram to leave the LTA alone because it was apolitical.
"He should realise these advertisement stickers are similar to the ones LTA has been approving. It's a new method of advertisement as long as it meets the standards and compliance procedures.
"LTA is requesting members of the public or any organisation or concerned party to refrain from making such malicious and false allegations and attempting to malign the integrity of the organisation for the sake of political ambition."