[Revoked]
Schedule 4, Diagram No 1 was substituted, as from 1 February 1989, by regulation 11 Heavy Motor Vehicle Regulations 1974, Amendment No 5 (SR 1988/325).
Schedule 4 was revoked, as from 27 February 2005, by regulation 8(c) Heavy Motor Vehicle Amendment Regulations (No 3) 2004 (SR 2004/445).