Why do these even exist on highways?

does that mean no limits during the day ?

a 60 hp shitboxe can do like 95 mph tops
t.shitboxe owner

it means you're at the cops' mercy

cool cops need more power especially in the usa

no just what ever speed you feel comfy with
and they will arrest you for doing stupid shit regardless of the speed you go

the autobahn is like that as well in that people are expected to know what they are doing
but it has speed limits around road works and on ramps/off ramps
and more sections are limited than what is used to be

there are also some mountain passes with solar/battery powered speed signs
they give out a different speed recommendations throughout the day depending on the weather

Dunno, I don't pay attention to them. I just set my cruise a few mph faster than everyone else. My grandfather was unimpressed when they raised the interstate limit to 75 in my state. Advocating for driving slower (60-65) he said, "You know, you don't HAVE to drive the speed limit." To which I replied, "Oh.. I rarely do."
I regularly break 100 mph in 40-75 mph zones. Best so far was hitting my cars electronic limit of 146 mph in a 65.

How do they prevent people from suddenly changing lanes in front of a car who is going much faster? I like the idea of going whatever speed you feel good with, but the idea of a car going half as fast suddenly shifting in front of me is terrifying.

>60hp

>anything over 120-130kph or so

yeah will they arrest you for cruising at like 150 kph ? on a straight road ?
well the unlimited portion of the autobhan have higher casualtie than the limited ones so that's understandable
but 4x4 highways shouldn't be limited to 130 kph

speeding on small road is way more dangerous thought especially in the mountain

it just get a little time but it goes