There is a pair of traffic-calming chicanes/pinch points on The Hollow. The one lower down the hill (where drivers must give way to downhill traffic) has a cycle bypass; the one further up the hill (where ascending traffic has priority) does not.

When I cycle up The Hollow I am probably managing about 5mph; this pinch point brings me into conflict with much faster motorised traffic going up the hill, to the extent that I usually avoid the road completely and take a different route (Southdown Road) that has no traffic islands/pinchpoints.