Cosatu said it will step up its anti e-tolling campaigns if government continues ignoring the opposition the system has triggered.
The trade union federation staged a Drive Slow on major routes in Johannesburg and Ekurhuleni on Thursday bringing traffic to a standstill.
Cosatu has vowed to hold bigger protests at the beginning of next year.
The federation’s Dumisani Dakile said they intended holding a bigger protest next year if government does not act on its dissatisfaction with the system.
The Drive Slow initially started with a small group of cars but gained momentum and support.
Cosatu said that judging by the overwhelming support, Johannesburg residents are not willing to pay for e-tolls.