 RVs in the city of Spokane have to move every 24 hours. Just as Patchen said, Spokane's city code is as followed. A camper or RV is only allowed 24 hours to be parked on public roads. And after that 24-hour grace period, what comes next is this yellow impound notice. Now, what does this new Washington spring port ruling mean for Spokane's RV city code? But if I can't get voluntary compliance, then unfortunately my only tool left is enforcement.