South African National Roads Agency Limited and National Roads Act: Regulations: Specifications G 36911 RG 10031 Gon 740
https://www.polity.org.za/article/south-african-national-roads-agency-limited-and-national-roads-act-specifications-gazette-36911-regulation-10031-notice-740-2013-10-09
9th October 2013
South African National Roads Agency Limited and National Roads Act: Regulations: Specifications G 36911 RG 10031 Gon 740