Gnil:

Speed limits are not just there to bring down casualties. On the highways they are there to monitor traffic . When the highways become saturated, driving at a slower pace will greatly reduce traffic jams because it avoids the sudden heavy braking , fast/slow,  that eventually, with it's repercussions on the cars behind, turns into jams. 

So with traffic getting heavier and heavier , highways not being able to become larger and larger, imposing slower speed limits makes it possible to absorb the extra traffic.  

 


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 964 Carrera 4 --  997.2 C2S , -20mm -- 991.2 GT3 RS 

 

 

That's called concertina effect. 

Someone at the front inadvertently step on a brakes for one reason or another and those that follows starts the cascading effect and if someone is not paying attention to where they are going then something bad will happened. 

Speed makes absolutely no difference as accidents will still happen if someone isn't looking at the road ahead. For someone travelling at 200-3000km/hr, if they keep theirs eyes up the road, they would have seen what is happening and slow down first. But if someone is not looking, they will still crash into the cars in front even travelling at 80 or 100km/hr. 🤷🏻‍♂️

Leawood made a very very good point, it's the difference in speed that's the danger. Most of the >1 car accidents that happened on the Autobahn, or any other highway for that matters, is someone moving to the passing lane without checking the mirrors to see if someone is coming up. 


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