The Opposition to Urban Tolling Alliance (Outa) on Thursday said an interdict against e-tolling will unearth controversial details about the South African National Roads Agency Limited (Sanral) and its service providers.
The North Gauteng High Court will hear arguments from both sides and then rule on whether the interdict will be granted.
The court will first hear from Outa who will argue that e-tolling is an irrational and impractical system which is not ready to go live.
After that, Sanral and the National Treasury will have a chance to respond to these allegations.
They could reveal more practical details about how the system would be administered.
Outa claim as many as 70,000 summonses for non-compliance would need to be issued each day, which would prove impossible to do.
The alliance will also attack how much money the project will generate versus how much it cost to build.
The court is expected to push for the matter to be wrapped up on Thursday, but it's unclear whether judgment will be given immediately after.
If it is, e-tolling will be put on hold while a full hearing is held.
On Wednesday, Judge Bill Prinsloo granted a verdict in favour of Outa.
He said the matter was an urgent matter that needed to be heard by the courts.
Sanral remain adamant that the system will go live on 30 April.