Comments by "SmallSpoonBrigade" (@SmallSpoonBrigade) on "Court of Appeals Tosses Man's $100 Speed Camera Ticket" video.

Signs can and do change from time to time. Usually there's a sign proclaiming that there's been a revision, but those are usually temporary signs and if the road crew forgets to put one up, it wouldn't change the status of the change. I'm guessing that has something to do why admitting that you probably should have known is insufficient to have the ticket stand.
17
Around here a bunch of tickets had to be cancelled because there were too many letters on some of the signs warning of the speed camera. (The limit exists because we're driving machines that weigh thousands of pounds and require attention be paid to the road to avoid killing anybody)
2
My mother got nailed for a parking ticket where there were two signs. One said no parking between these hours, which was fine, but the other limited how long you could park there without a special permit and that one was blocked so that it could not be seen. To make matters worse, the parking enforcement officer wasn't even a real officer, the result was that even though the court stuck to the ticket, although it was reduced. they did ultimately have to refund all of the money because the officer was not legally allowed to write tickets during that period. I do think that if cities were allowed to use hidden signs for these purposes that it would likely wind up the way that knock warrants might as well be no knock warrants as the police aren't required to allow time for the residents to respond before kicking in the door. And the kicked in door is the responsibility of the resident to fix, not the cops that opted to break it rather than wait for a response.
2
I remember there used to be issues because there is a state defined default speed limit and that changes to that needed to be signaled with appropriate signs. The problem is that they aren't on every block, so if you're new to the area and you turn onto a street after the sign and before the next one, you'd have no way of knowing that a different speed limit was in effect. Similarly, we've got a school zone here that's on the corner of two arterials and the only sign indicating that there's a school zone when you turn onto the other arterial is literally on the corner and extremely hard to see if you don't know to look for it. The first warning is often times the sign saying that the school zone has ended. I've never seen anybody pulled over there, so I don't know if or how often it's enforced, but it's a ridiculous safety hazard to have a sign literally on the corner where drivers have to take their eyes off the road in order to read the sign like that.
2
If it's not legible then it's not posted. It should be common sense, but it does require that the people that put up those signs actually ensure that there isn't any tree or bush likely to grow in front of it and to go around and verify that it's still the case before performing appropriate actions.
2
It's kind of screwed up that around here the city can declare a citywide default speed limit that's lower than the one that the state uses. They justify it by putting signs on the arterials coming into the city, but it does seem kind of ridiculous to allow a city to lower the speed limit on it's own. This is especially the case because nobody, including cops, actually abides by the new speed limit which is simply too low to be workable. It's the city's way of punishing motorists for jaywalkers being too stupid to not jaywalk in front of cars.
2