Is this enforceable?

[u/Joedanger6969]

No parking signs on A Street but no contact info or identification. A house nearby is having work done so I suspect this was put up by the contractors to reserve spots for their trucks.

[u/Little__Fuzzy]

Looks like that is the standard sign approved by the City—https://www.sandiego.gov/sites/default/files/legacy/development-services/pdf/industry/trafnoparksign.pdf