Published Thursday, 19 January 2012
Since the road opened over a year ago there have been 26 reports of vehicles travelling in the wrong direction towards oncoming traffic.
The new measures include additional signs, white lining and coning.
Jimmy Spratt, Chairperson of the Committee for Regional Development said the committee welcomed the announcement.
"The Committee for Regional Development recently expressed grave concern at the number of accidents that have occurred on the A4 dual carriageway, particularly those incidents where vehicles have entered the carriageway and travelled in the wrong direction.
"The Committee takes the reduction of incidents on the strategic roads network very seriously and will continue to press the Department on such issues, particularly where safety becomes an issue due to inappropriate signage."
It is the second time the Roads Service has improved the signage on the route.