Killarney Labour Senator Marie Moloney raised the issue citing a number of accidents – including three fatalities.
The Senator said Gardaí in Killarney received between 70 and 100 calls a year about roaming deer and while they’re a vital element in drawing visitor numbers they should be controlled in the interest of safety.
She called for the erection of high impact warning signs at prominent locations.
A reply, delivered on behalf of Minister Heather Humphreys said the erection of a fence could impact on the sensitive habitats within Killarney National Park.
But improved sight-lines would benefit motorists and additional or relocated signs may be provided.