signs that point out the glaringly obvious

[zachary_amaryllis]

Not sure if it's a recent phenomenon, given that New Jersey has had signs for decades that remind you to obey the laws when leaving the Turnpike. Yes, I'll obey local speed laws (or not) regardless of what road I'm coming from.

i haven't been om the turnpike since i was very young, but i seem to recall they were in lowercase. can't fault them for that 

[hbelkins]

"Water on Pavement in Heavy Rains" ...a staple of Southern Illinois:

Perhaps alerting drivers to potential flooding?  I'm guessing this sign means more than, "The road might be wet if it's raining."

Then "Road Subject to Flooding" would be less duh.

This type of sign isn't intended to alert drivers to possible flooding. It's to make them aware of possible ponding of water or standing water, and the associated hydroplaning risks, as someone else noted upthread. Kentucky uses "Water Possible In Road" or "... On Road" sometimes to warn of this. That is the type of hazard that can occur even if there is only a light rain and not flooding rain.

[J3ebrules]

Not sure if it's a recent phenomenon, given that New Jersey has had signs for decades that remind you to obey the laws when leaving the Turnpike. Yes, I'll obey local speed laws (or not) regardless of what road I'm coming from.

i haven't been om the turnpike since i was very young, but i seem to recall they were in lowercase. can't fault them for that 

Yes! I remember several variations, but this is one of the older ones still extant (I believe), courtesy of alpsroads.net:

[Mergingtraffic]

Not sure if it's a recent phenomenon, given that New Jersey has had signs for decades that remind you to obey the laws when leaving the Turnpike. Yes, I'll obey local speed laws (or not) regardless of what road I'm coming from.

i haven't been om the turnpike since i was very young, but i seem to recall they were in lowercase. can't fault them for that 

Yes! I remember several variations, but this is one of the older ones still extant (I believe), courtesy of alpsroads.net:

[JoePCool14]

STOP signs. 

Okay, okay. Maybe that's too obvious. Maybe a better example is adding a lane ends sign shortly after a lane merge sign (note: not a lane ADD sign) if there is a short acceleration lane.

[tolbs17]

Not sure if it's a recent phenomenon, given that New Jersey has had signs for decades that remind you to obey the laws when leaving the Turnpike. Yes, I'll obey local speed laws (or not) regardless of what road I'm coming from.

i haven't been om the turnpike since i was very young, but i seem to recall they were in lowercase. can't fault them for that 

Yes! I remember several variations, but this is one of the older ones still extant (I believe), courtesy of alpsroads.net:

I remember seeing those. Do they still make those?

[US20IL64]

Some people still do not understand not to sit and idle in RR crossings! There was an train accident one time that hit a few cars [luckily at slow speed] Drivers were using excuse, "but I couldn't move". Then why did you enter the RR crossing in the first place, when there is no room on other side! 

[J3ebrules]

Not sure if it's a recent phenomenon, given that New Jersey has had signs for decades that remind you to obey the laws when leaving the Turnpike. Yes, I'll obey local speed laws (or not) regardless of what road I'm coming from.

i haven't been om the turnpike since i was very young, but i seem to recall they were in lowercase. can't fault them for that 

Yes! I remember several variations, but this is one of the older ones still extant (I believe), courtesy of alpsroads.net:

I remember seeing those. Do they still make those?

I don't believe so. I haven't been at all the exits - at least not recently - but I can't think of any newer-looking signs that talk about obeying local speed laws. I think they're all 60's/70's holdovers.