Are you sure that the time-conditional restriction is correct for the service road?  I visited this location on January 15, 2025 and there was an unconditional "right turn only" restriction from the service road, like the one in this Mapillary image: https://www.mapillary.com/app/?lat=38.9026429&lng=-77.0382639&z=19.243399386914778&mapStyle=OpenStreetMap&pKey=578009907499172&focus=photo&x=0.4265917848549031&y=0.3344586912640908&zoom=0.665217391304348 .  (That's even stricter than the unconditional "no left turn" that OSM had before this changeset.)  I suspect the time-conditional "no left turn" is intended for the main road, and that restriction is already mapped (https://www.openstreetmap.org/relation/6528323).

If you could recheck your imagery, that would probably be the quickest way to resolve this.  Otherwise, I'll resurvey the restriction if and when I have an opportunity to visit the location again.  Thanks!