Signpost Corner

Signpost Corner is a road curve at the intersection of A18 Snaefell Mountain Road and A39 Hillberry Road in Onchan parish. The junction features directional signposts that mark where these two routes meet on the mountain roadway.

The site developed as part of racing operations in the mid-20th century and was adapted to meet the needs of organized events. Road modifications came in 1953, when the section was widened and reshaped to improve conditions for the motorsport activity.

The location appears in local racing stories and holds meaning for residents as a reference point on the mountain road. Visitors can observe how this intersection serves as a landmark in the community's shared knowledge of the route.

Visitors can easily locate this intersection using the signposts as a reference point along the mountain road. The area is accessible on foot and offers views of the surrounding landscape and the junction where the two routes meet.

Local Scout volunteers operated a light signal system here to indicate to race officials when competitors passed through this checkpoint. This simple method allowed organizers to track progress across the mountain course without complex communication equipment.