Glass Solar Road Studs Rate South Africa-Nokin Road Studs. Glass Solar Road Studs Rate South Africa ROAD SAFETY MANUALS FOR AFRICA Existing Roads: Proactive n South African Road Safety audit Manual (2nd Edition) – South Africa (2012) V AFRI A V A GR n Road Safety Audit Manual – Uganda (2004) n Design Manual for Roads and Bridges, Vol. 5, Section 2, Part 2, HD 19/03 Road Safety Audit - UK