The implication of your post is that you think it should be possible to find out everything that happens on public roads, included things like where you drove your car, what accidents you've had, and whether you've broken any traffic laws. That would be quite an extreme point of view. Roads are public in the sense that they're paid for by the public, and open to the public, but that surely shouldn't extend to the public being allowed to track everything that happens on them. There should be some limit on gathering information about public spaces.