Roundabout Warning Sign : The sign (W 2-7) in AS174(2)1 generally placed on approaches to a roundabout to alert drivers to the presence of a roundabout ahead where it may not be obvious to approaching traffic
Peter Milne and Kieran Sharp, ARRB Group, and Bob Ungers, consultant, Austroads Glossary of Terms (4th Ed.), Austroads Ltd., Sydney, NSW, Australia 2010. http://www.bicyclensw.org.au/files/u1/Austroads_Gl ossary_of_Terms_4th_edition.pdf (Road Trfc and Transp Sfty - Brit) {529}