Iowa Department of Transportation on deer crossing signs

Why did the mule deer cross the road?

Drivers chuckle at funny highway message signs

Suicidal deer,' says northern Iowa county's road warning

Seeing more roadkill on the highway? Here's why, News

Preventing Animal-Vehicle Crashes using a Smart Detection Technology and Warning System - Cristian Druta, Andrew S. Alden, 2020

Chapter 5 - Wildlife-Vehicle Collision Reduction Study: Report To Congress, August 2008 - FHWA-HRT-08-034

Amid research indicating deer crossing signs don't work, state officials seek new strategies

Dumb drivers force Iowa officials to confirm 'deer can't read' road signs

A deer crossing sign at Joint Base McGuire-Dix-Lakehurst, - PICRYL - Public Domain Media Search Engine Public Domain Image

What's Going On With The Farting Deer Signs In Iowa?

Iowa DNR Adds Main Antler Length to Deer Harvest Reporting

Drivers chuckle at funny highway message signs