Johannesburg - The SA National Roads Agency Limited said on Monday that having an e-tag was optional and road users had not been stopped by police for not having one.
Sanral spokesperson Vusi Mona said in a statement: "Sanral is not working with the Johannesburg metro police department to check whether road users are e-tagged or not.
"In fact, acquiring an e-tag is optional and no road user should be stopped for not having an e-tag."
Mona was reacting to motorists who phoned a radio station and claimed they had been stopped by police at the weekend to check if they had e-tags.
"We categorically deny that there is any partnership with the metro police on this," he said.
"No vehicles on any road are being checked to see whether they are e-tag registered... Sanral urges any road user who has been stopped purportedly to check if they have an e-tag to contact the company."
E-tags are for electronic tolling in Gauteng, which became effective in December.