This rule is again simmering European governments. Among the UK and Norway. All this background that many accidents happen to riders. Mainly due to high-speed accident. Understandably, the Europeans care very similar lives. Until the government think about the safety of motorcycle riders participate. Very different with our government, which often makes regulations that increasingly make motorist marginalized.
By the way, if the rules of speed restrictions in Europe was so applied, I can not imagine what would happen there bikers? For Europeans usually ride a large motorcycle.