The Protocol requires the region to harmonise road infrastructure.
"All Sadc countries are now required to have uniform traffic control devices and this includes road markings, signs and traffic signals," Mr Chinyere said.
The main reason for the use of stop signs at road junctions is safety.
Four-way stop signs are widely used in other countries such as the United States, Canada, Sweden, South Africa and Namibia.
Stop-controlled intersections are believed to be safer than those without any traffic control.
According to an international study of locations where the system is in use, all-way stop controls applied to four-legged intersections may reduce accident occurrence by 45 percent.
Meanwhile, people have expressed outrage over the Traffic Safety Council of Zimbabwe's decision to introduce new regulations that will penalise pedestrians who cross roads at undesignated points.
TSCZ recently announced plans to tighten the Highway Code by penalising pedestrians with a jail term of up to six months or a US$20 fine starting next year for violating traffic laws.
A snap survey of pedestrians conducted by The Herald yesterday showed many people thought the measures were impractical because of the influx of cars in the country and the fact that many traffic lights were either not user-friendly or not working at all.
"Most of the traffic lights are not working as we do not have proper technology used in other countries where pedestrians also have control over traffic lights," said Takaidza Takaidza of Chitungwiza.
"Robots are not functional and our road markings are bad. The council needs to ensure that all pedestrian crossings are clearly marked and that motorists also respect pedestrians who are road users as well."
Said Mary Shelton who works in Harare: "The authorities have to first invest heavily in the repair and maintenance of all the existing traffic signs and lights.