Those who state that 140 kph is stupid, they have obviously NEVER EVER driven a performance car and making such comments is IGNORANT.
The problem is 100% the education of the drivers in this country. They are fucking morons. They don't think ahead making drastic last minute reactions on busy roads (or stopping) in the middle of the road (like the idiots do all the time from the left lane to get onto the turn-off to Pavas from Escazu -> San Jose).
140 kph IS stupid HERE (which is the point of this post) for several reasons of one which you CLEARLY state but just to list a few
a) driving at 140 kph IS stupid because you can encounter a cow/a motorcycle stopped/ a pothole / a guy trying to cross the expressway on foot with ZERO notice, it doesnt matter how awesome the brakes are etc, physics has limits to everything and simply 'the faster you go the longer it takes to stop
b) driving at 140 kph is ALSO stupid because all drivers are not created equal, some have better eyes and some have better reflexes and some have more experience driving under certain conditions
c) driving at 140 kph is ALSO stupid because in an accident ......it is possible that they determine how fast you were going and therefore its not going to play very well in court if you happen to kill someone and there is doubt at who is at fault, same can be said about insurance, and simply put, with the new transit law.......140 kph will 'probably' cause some big legal issues
limits exist for several reasons some of which are simply because of the physics of the road (inclination/radio of curvature of a turn etc etc)
I've driven at 140 kph. I am sure we have gazillion posters that will say the same thing.....easily done in many interstates or autobahns....simply everyone is going as fast or faster.....their roads are MUCH different than ours, so are the drivers....so are the pedestrians (none existent in an interstate/autobahn)......etc.
In summary, don't do 140 kph here (or 130....)
If the cops would (somehow .......) enforce every single transit law in here.....we would still be screwed because there is not enough space for all the cars that we have.