2018 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. July 31, 2019. Retrieved May 12, 2024.
This template creates a reference used to cite the lengths of Iowa highways
| Parameter | Description | Type | Status | |
|---|---|---|---|---|
| 1 | 1 | The date the logbook was accessed. | Date | required |
| year | year | The year of the logbook that is being referenced.
| Date | required |
| link | link | This will turn off the wikilink to Iowa Department of Transportation. Only accepts "no". | String | optional |