Its a South City thing Rodent you wouldnt understand but its a total pain if you are traveling down the canal for Renalagh .You use to go right left right but now you have to go left,left right through the lights past Roddies then left round the Chapel down to the lights left righ left .I hope its not a question on the test .Or alternatly you could continue on down the canal past the no turn turn for Renalagh and just under the Luas bridge there is a small laneway turn right ,right then left onto Renalagh .Hope this helps or an alternative to the alternative you could turn off the canal at Rathmines go left ,right at the bleeding Horse right at the luas line sharp left and straight up to Renalagh .