Steve Johnson, community spokesman, said the signs were set up on either side of the Bullhead Parkway after a car killed a burro last week, the Mohave Daily News, Bullhead City, reported Monday.
"We will be meeting with Bureau of Land Management officials on Feb. 8 to further address the issue of these migrating burros," Johnson said.
Police said burro crossings have become an increasing problem in the area.
"Approximately 20 calls regarding sightings of burros on or near the roadway have been placed by concerned citizens to the 911 center since December," said Emily Fromelt, spokeswoman for Bullhead City Police Department.
Putin thinks Obama would save him if he were drowning
Justin Bieber crashes Drake Bell's album release party