- Manual on Uniform Traffic Control Devices (MUTCD)
- Guide to Iowa Outdoor Advertising Sign Regulations - PDF
- Guide to Outdoor Advertising Regulations for Interstate Highways
- Logo Business Sign Information and Application Instructions - PDF
- Code of Iowa, Chapter 318, Obstructions in Highways (type "318" into the "Chapter" field and click the "Get Section" button)
- Code of Iowa, Chapter 306C, Junkyard Beautification and Billboard Control (type "306C" into the Chapter field and click the "Get Section" button)
- Code of Iowa, Chapter 306B, Outdoor Advertising Along Interstate Highways - PDF
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