And BEAM was the reimplementation of the Erlang runtime, the actual model is part of the language semantics which was pretty stable by the late 80s, just with a Prolog runtime way too slow for production use.
AFAIK no. There are default stack sizes, but they're just that, defaults, and they can vary on the same system: main thread stacks are generally 8MiB (except for Windows where it's just 1) but the size of ancillary stacks is much smaller everywhere but on linux using glibc.
It should be possible to get the stack root and size using `pthread_getattr_np`, but I don't know if there's anyone bothering with that, and it's a glibc extension.
Of course, how could a writer writing have writing chops and use writing techniques? It boggles the mind that anyone thinks that would ever happens. Must have been aliens.
> Kuda on the UK allowing higher loads, and therefore benefiting from extra wedge devices on the top of the cab.
Cab-top deflectors are extremely common on every truck where the cab is not tall enough to cover a standard trailer (which is common, usually only the highest end sleepers are that tall e.g. Scania's highline cab on the R and S, Volvo's globetrotter xl and xxl, ...)
To clarify, the air bags isolate the cab from the chassis.
There is also suspension between the axles and the chassis which is 99% of the time air on the rear, leaf spring front.
I haven't come across a cab that is suspension isolated from the frame of a conventional, even though the axles are on air. Theoretically as the driver is in the sweet spot of a much longer wheelbase, rather than sitting directly over an axle.
> important regulation is truck speed limits, because drag grows
No I just meant that drag was a second thought when the regulation was conceived on either side of the ocean. The regulation was not created "because of drag". The main driver was road safety. Efficiency and pollution were secondary. There are other ways to achieve them like improving aerodynamics or power trains, and much of this cost is paid by the freighter alone. This is why speed limits didn't increase as trucks got more efficient and drag went down. Because there's no way to reduce the potential energy of a 40-50t vehicle (or up to almost 90t Finland) travelling at 130km/h.
Europe has length limits on the entire thing, so US trucks would require shorter trailers, which nobody really wants. Euro trucks also have significantly smaller turning radii, which makes navigating european cities and country roads… feasible.
Furthermore Europe has relatively strict speed limits on trucks, which makes aero something of a lesser factor since drag grows to the square of speed: european trucks at european speeds have a pretty significantly higher efficiency than US trucks at US speeds.
I could be wrong, but I thought the US had a mostly-national speed limit of 55mph, while the UK truck speed limit is 60mph, and the French truck speed limit appears to be 90kmh (56mph)
US speed limits are highly variables, they’re generally 55 in the north-east but on the western half they’re 65 to 70, and 75 in TX.
And that assumes the speed limits are respected at all, but the EU has required a hard 90kph limiter since 2005, tampering with the limiter is a criminal offense, so is tampering with the (also mandatory) tachograph which would reveal the first.
So while nothing prevents speeding up to that (and it very much happens) going higher becomes extremely dicey.
> US speed limits are highly variables, they’re generally 55 in the north-east but on the western half they’re 65 to 70, and 75 in TX.
I fear even that is misleading. Yes, the speed limits on undivided highways are often 55 in the north-east (or even 50 in a couple), but the speed limits on divided highways are all higher, ranging from 65-75 mph. See the two maps on the top right: https://en.wikipedia.org/wiki/Speed_limits_in_the_United_Sta.... I suspect that the majority of truck miles are on divided highways.
A number of the major freeways immediately around Boston are 55. Almost nobody actually drives slower than +10 mph. If you go 55 in the slow lane you'll get passed by other people in the slow lane!
I've seen truck speed limits of 55 pretty much everywhere I've been except Texas, though.
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