No Parking Any Time Sign
MUTCD R7-1
Parking is prohibited here at all times.
What it looks like
A vertical white rectangle with black legend reading NO PARKING ANY TIME, often accompanied by a directional arrow.
When you'll see it
Posted along curbs, near intersections, and by fire lanes and driveways where a parked vehicle would block traffic or access at all hours.
What to do
You must not park here at any time; brief stopping to load or drop off may still be allowed unless other signs prohibit it.
Related signs
Source: Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition — FHWA.