File talk:Cape Town ring road.svg

I have a question about what this image represents: The complete red line is a circular route formed by the N1, R300 & M7 designated routes. Now, when exactly was the "N1" declared part of a "ring road"? Also, when was the "M7" declared part of a "ring road"? A while back, I removed this image from the "N21 (South Africa)" article simply because this image is "not talking about" the N21 & now I want to see if any of these red lines are actually DECLARED ring roads? what sources exist for this image?