Assuming perfect drivers with flawless merging and exit techniques, and no one hogging the left lane, is there any reason to build more than 2 lanes per direction with good on/off ramps?

>>28519249 (OP)
Not really, but your scenario is impossible with the apes on the road now. Only once self driving vehicles become the norm will we be able to have orderly roads.
Until then I'm stuck with you subhumans.

Even assuming everyone drives perfectly with the exact safe distance between vehicles for the given speed limit, there is a maximum "bandwith" of vehicles a 2 lane road can support. And if travel demand exceeds it, oops.

Even with perfect lane discipline, another lane increases throughput if traffic is so high that it bottlenecks.

>>28519249 (OP)
there should be one-way roads that run along highways that skirt city limits and residential areas and just have no speed limit on it.

>>28519276
based

How about three lanes with the left-most lane having no speed limits? Is this the Platonic ideal of the freeway?

yes, because if one lane has to be closed to work or an accident it all goes to shit
all highways should be a MINIMUM of 3 lanes in each direction
I-81 is mostly 2 lanes and it is HELL

>>28519282
Yes, yes it is. With speed limits in all lanes through major cities.

>>28519249 (OP)
I used to drive 85 for hours on I65 without even thinking about it. Divided highways engineered to that standard are nice.

Why isnt there some automaker lobbying for an autobahn system? Or a politician passing such laws? America is big on cars thanks to car lobbying, a more extreme version of Germany, and yet it doesnt have the key ingredient. American muscles were made for the long straight highways with no speed limits.

>>28519298
85mph in a 70 is the normal speed on I65 near me. It's not a bad highway, but lots of speed traps that all the truckers know. I75 is more scenic through the mountains.

>>28519249 (OP)
Yes, because semi trucks ruin everything

>>28519249 (OP)
>and no one hogging the left lane
The only reason extra lanes don't work is the boomtards cutting off all traffic to slow down the passing lanes just to do it again when the slow lane starts moving.

>>28519331
Correct.

>>28519249 (OP)
These guys got it right >>28519269 >>28519272
Maximum throughput without jams (assuming perfect drivers) is one car every two seconds in a lane, i.e. 1800 cars per hour per lane. If you want to flow more than 3600 cars per hour, you need more than two lanes.

>>28519249 (OP)
>Assuming perfect drivers
>with flawless merging
>and exit techniques
>and no one hogging the left lane
That's a lot of assumptions anon.

>>28519305
In exchange for unlimited speed on the autobahns, krauts have to put up with excessively strict licensing and inspection rules. The American system is better. Licensing and inspection rules are relaxed and the speed limit isn't strictly enforced, so people can still drive whatever speed they like.

>>28519897
>mount rims that are half an inch wider than what the car came with
>have to jump through five different hoops at Das Zulassungsantragstellungsbehörden
it's not that bad of a trade for getting to pass cops at 160mph

>>28519282
>>28519305
My dream is some kind of special license/plates that require you to show actual competency but in exchange if you're on a highway/interstate you can go as fast as you want as long as you're not being retarded about it and weaving through traffic at 150MPH.

>>28519897
>krauts have to put up with excessively strict licensing and inspection rules
Inspection is fucking whatever. It only gets annoying of you forget to undercoat your car in Fluid Film, or its one of those cars that eat bearings or bushings. At which point you have to replace those to do the EU-vehicle inspection
>10% wheel dimension AND offset allowed
Pretty excessive choices, especially since its unrelated to rim diameter.
Even more so if you are willing to do the paperwork since any OEM is going to have multiple different wheel dimensions available.
>but
No, they don't even check the oxidation of the brake fluid down at the rotors, they check at the reservoir.