A bill for an act relating to the control of traffic on certain highways within certain cities.

HF 493 requires the Iowa Department of Transportation (DOT) to install and maintain traffic signals at specific intersections in Hull, including where U.S. Highway 18 overlaps with Black Forest Road or 320th Street, and at Division Street. It also authorizes cities to mandate railway companies to build overpasses or underpasses on nonprimary highways within city limits, subject to DOT safety approval. The bill specifically directs the DOT to approve an overpass on County Highway C44 in Merrill, Plymouth County, over railway tracks. These provisions directly affect local traffic management in Hull, Merrill, and railway operators handling crossings.