Originally Posted by billsmith
However, because something is allowed does not make it law. Because it is practiced still does not make it law. When it's in writing and has been legislated upon then it is law.
Laws tend to prohibit activities or clarify activities; they do not "allow" them, or "make them legal".
California has no law prohibiting the chewing of gum, so chewing gum is legal. My city has an ordinance against spitting gum out on the sidewalk, so doing so is illegal; it is expressly illegal.
California has a clarification in the vehicle code that tells us that a motorcycle may use the HOV lane, so we may do so even if there is only a rider on the motorcycle. The law prohibits a single driver from using the HOV lane.
Similarly, the California vehicle code make no prohibition against two vehicles occupying the same lane at the same time in a tandem fashion, so it is not illegal. The fact of the matter is that two cars may share a lane, side by side, if they can fit in that lane in a safe manner. Them wee Fiats just might be able to do it...
There is a great deal of urban legend around the motorcycle lane sharing/splitting, some believing that it came about because CHP needed to be able to do it, and civilians as well, to avoid overheating of their air-cooled motors.
Nope, we can do it because it simply is not illegal, but there are laws prohibiting operating a vehicle in an unsafe manner that the LEOs can bring to bear. Sorta like chewing gum in a safe manner. I try not to walk, text, or cut my hair while chewing my gum...