Primary roads, and extensions of primary roads within cities are hereby designated as through highways.
Iowa Code § 321.350
Primary roads as through highways
[C27, 31, 35, §5079-b1; C39, §5029.10; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.350]
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.