The Expert will be specific knowledgeable people at the Department of Transport, Arrive Alive Communications, the Road Traffic Management Corporation or others who might have the expertise to answer the question.
JMPD spokesperson Wayne Minnaar said all vehicles registered after July 1 2007, must carry at least one emergency warning triangle sign in terms of Regulation 214 (2) (a) of the National Road Traffic Act.
Motorists without a triangle in their car could be fined R500, he said.
The only vehicles excluded from this regulation were ambulances, cars registered before July 1 2006, motorcycles, motor tricycles and motor quadricycles.
Minnaar said goods vehicles, minibuses and buses first registered before July 1 2007, will not be allowed on a public road without at least one emergency triangle sign.
"Prior to July 1 2007, only goods vehicles such as trucks, buses and minibuses were required to carry the sign, but now it applies to everybody due to the changed legislation for safety reasons," said Minnaar.