> There is one thing I will never understand, why do a lot of people talk about speed limits as the speed you need to be driving? It’s the maximum speed you can

> There is one thing I will never understand, why do a lot of people talk about speed limits as the speed you need to be driving? It’s the maximum speed you can reach before being fined, it doesn’t mean “oh man I’m driving at 90km/h and the limit is 100, that’s so wrong”. Different traffic laws. In Germany, there's only a lower limit on the Autobahn, and there's an advisory speed limit that in precedent cases you must be able to maintain if your vehicle and road (and weather) conditions permit but in practice is somewhat overrun, which is legal. Most states in the US penalize overspeeding, but also penalizes underspeeding on state and interstate highways if car, road and weather conditions otherwise permit. While counterintuitive, in highways (especially interstate ones) there's an expectation of a "belt" of vehicles that maintain more-or-less the same speed: different speeds of vehicles should be on different lanes (the innermost being the fastest lane otherwise posted in signage).