The GRTU has written to the Minister for Transport and to the chairman of ADT to complain on the new speed cameras being introduced.
The chamber said they are causing an unnecessary expense to distributors and other transport professionals who used the roads regularly.
It insisted that high way code speed limits (85kph on main roads) and (55kph urban zones) should be adhered to.
"The current speed limits being imposed through the enforcement made by speed cameras infringe the speed limit rights vehicle owners have under the law."
In addition, it said, the location of the cameras were not chosen on safety grounds as the cameras were located on roads where it was safe to drive up to the national speed limits. In contrast, cameras were not placed in sensitive zones such as school areas where this speed would constitute a danger to pedestrians.
"The GRTU considers the locations chosen to install the speed cameras as literally highway robbery," the Chamber said