Intresting
In the future please elaborate a bit more then a single misspelled word for a GSV link.
I find it interesting that a freeway entrance sign in California has an up pointing arrow instead of a down pointing one as the norm. I have never seen that before personally, in California. Excuse the brevity, I saw it while working and didn't have a whole lot of time to type a novel on something I thought would be accepted as unique by other as well. If this isn't that unique, then my sincere apologies.
My quick thought would be the sign was an error and should have been pointing down to the right, not to the left. The contractor/installer flipped it so at least it was pointing in the correct direction, and never got fully fixed.
It is supposed to be a diagonally downward-facing arrow, but it's not too uncommon to see a diagonally upward-facing arrow used in error. You'll see that sometimes in Nevada as well. Sometimes due to the geometry, it makes sense why the wrong arrow might be used—as in this example of
Sparks Blvd SB ramp to I-80 EB in Sparks, NV.
The downward diagonal arrow is used in freeway entrance assemblies as a means to convey the message of "here" (as in "the freeway entrance is here"), similar to how a downward diagonal arrow is now used at signed marked crosswalks to indicate the actual crossing location.
<rant>I actually kinda wish the MUTCD would adopt the curved shaft arrow used (only?) on the R1-5 series "yield/stop for pedestrian" signs, such as the R1-5-bL sign below. That is one definitive use of a downward-facing arrow meant to signify to do something at a specific point, and not a diagonal arrow meant to give a direction. Such arrow could be used at freeway entrance assemblies, pedestrian and similar crossings, "stop here on red", and similar signs that reference something happening/existing at a particular spot.

</rant>