Iowa Plains Signing, Inc. (IPSI) provides 24-hour traffic control. We cover all of Iowa, Nebraska, and surrounding states, we ... are able to offer you efficient, state-wide service. Full service traffic control & pavement marking contractor. Rentals, sales, manufacture & installation of signs & barricades. We also provide arrow boards, message boards, concrete barrier rail & crash attenuators. Pavement striping, temporary & permanent. We have been dedicated to quality service & roadway safety for over 30 years. See Less read more