I haven't been there for a few years, but I think the first part of the road (driving anti-clockwise around the Orme) used to be one-way only, and the last part around the other side changed to two-way traffic.
I've slept in a small car park on the cliff edge past the lighthouse (not sure if the public can access it nowadays?), and also on the top of the Orme. The top was a great area to explore. I think there's a Roman well or something up there, plus that lovely little church and cemetery overlooking the bay. I also remember the beaches there were good for Bass fishing!