Transport for Christchurch posted a video on its Facebook page of the rabbits with a safety message.
"While it might seem like a good idea to take your children to see the roundabout rabbits, the safest way to do this is to point them out as you drive past," the message said.
"It is not a good idea to take them across the road onto the roundabout. We all know how unpredictable young children can be when over-excited, this could also endanger the rabbits and scare them into running on to the road. This is a state highway and heavily used by large trucks."
An Environment Canterbury spokeswoman said it has received a number of calls about the issue.
"While it is not our responsibility but the landowners, it is a situation we can help get resolved," she said.
"With this in mind, we have contacted the New Zealand Transport Agency, which we understand is looking into control options to reduce the risk."