SS18 was by far one of the best roads I've done on 24 April 2011 on a sunny day. I started from Santa Lucia area and worked my way up to Agropoli and had lunch at north Agropoli at this place called Alis. The road was clean and there were so many twisties and it was amazing. I did get lost a little bit and ended up on the expressway, but pointed my GPS toward Rutino and I was back on SS18. I just ended up by-passing the straights. I highly recommend this ride!
The SS18 is the best road in the Cilento Coastal area. No traffic to speak of since there is a main highway that parallels this route. The road surface is fantastic for the first 75% of the route from the south which is so curvy you won't believe it.