When leaving the Rt. 15 North Haven service plaza/rest stop (right before exit 63, heading south) the yield sign has been knocked down for over a month. This is SUPER unsafe as cars leaving the plaza think they have a long on ramp in which to merge, which they don't and drivers on Rt 15 assume there's a yield sign so people in the plaza will wait for them, which they won't. All in all very dangerous and I can't believe it's been knocked down THIS long without a new sign being replaced. I pass this plaza every day and am always nervous passing by.