Johannesburg - The North Gauteng High Court will hear on Friday an application by the Opposition to Urban Tolling Alliance (Outa) to appeal against a previous judgment approving e-tolling.
Outa said on Tuesday it remained "committed to the case".
The appeal follows a judgment on December 13 by the same court, which dismissed Outa's application to have the electronic tolling of Gauteng's major roads scrapped.
The court ordered Outa to pay the legal costs of the application. Outa said it also intended appealing this order.
Outa chairperson Musa Strachan previously said the organisation believed it had strong grounds for appeal.
Strachan said in the e-tolling case, public participation was not possible "yet the court ruled that public engagement was sufficient and adequate".
In this regard, Outa maintained that procedural and objective fairness had not been applied, making the introduction of e-tolls unlawful, he said.